diff options
| author | John Crispin <john@openwrt.org> | 2015-05-23 15:28:02 +0000 |
|---|---|---|
| committer | John Crispin <john@openwrt.org> | 2015-05-23 15:28:02 +0000 |
| commit | 8e49b4b9029b6bdef052604094c47ca18ab3fefb (patch) | |
| tree | f7cd221bca0d43d031136802508daea09180d273 /target/linux/ipq806x | |
| parent | 0b24527e4dd56fb34700bc879729268b7480fa7f (diff) | |
| download | upstream-8e49b4b9029b6bdef052604094c47ca18ab3fefb.tar.gz upstream-8e49b4b9029b6bdef052604094c47ca18ab3fefb.tar.bz2 upstream-8e49b4b9029b6bdef052604094c47ca18ab3fefb.zip | |
ipq806x: add & enable cpufreq support
This change set enables frequency scaling on ipq806x, which speeds-up
the CPU and allows it to achieve its max frequency.
These patches are cherry-picked & backported from the following location:
*130-132: linux-next
*133-143: LKML - https://lkml.org/lkml/2015/3/21/15
*144: derived from other qcom similar dts
*145: derived from https://chromium.googlesource.com/chromiumos/third_party/kernel/+/chromeos-3.14/drivers/cpufreq/cpufreq-krait.c
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
SVN-Revision: 45730
Diffstat (limited to 'target/linux/ipq806x')
33 files changed, 6531 insertions, 2 deletions
diff --git a/target/linux/ipq806x/config-3.18 b/target/linux/ipq806x/config-3.18 index 1e08f36a7b..2f5954c1e2 100644 --- a/target/linux/ipq806x/config-3.18 +++ b/target/linux/ipq806x/config-3.18 @@ -40,10 +40,12 @@ CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y CONFIG_ARM_CPU_SUSPEND=y CONFIG_ARM_GIC=y CONFIG_ARM_HAS_SG_CHAIN=y +# CONFIG_ARM_KIRKWOOD_CPUFREQ is not set CONFIG_ARM_L1_CACHE_SHIFT=6 CONFIG_ARM_L1_CACHE_SHIFT_6=y # CONFIG_ARM_LPAE is not set CONFIG_ARM_PATCH_PHYS_VIRT=y +CONFIG_ARM_QCOM_CPUFREQ=y # CONFIG_ARM_SP805_WATCHDOG is not set CONFIG_ARM_THUMB=y # CONFIG_ARM_THUMBEE is not set @@ -64,6 +66,7 @@ CONFIG_COMMON_CLK=y CONFIG_COMMON_CLK_QCOM=y CONFIG_COMPACTION=y CONFIG_COREDUMP=y +# CONFIG_CPUFREQ_DT is not set CONFIG_CPU_32v6K=y CONFIG_CPU_32v7=y CONFIG_CPU_ABRT_EV7=y @@ -73,11 +76,25 @@ CONFIG_CPU_CACHE_VIPT=y CONFIG_CPU_COPY_V6=y CONFIG_CPU_CP15=y CONFIG_CPU_CP15_MMU=y +CONFIG_CPU_FREQ=y +# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set +# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set +CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y +# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set +# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set +# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set +# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set +CONFIG_CPU_FREQ_GOV_PERFORMANCE=y +# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set +# CONFIG_CPU_FREQ_GOV_USERSPACE is not set +CONFIG_CPU_FREQ_STAT=y +# CONFIG_CPU_FREQ_STAT_DETAILS is not set CONFIG_CPU_HAS_ASID=y # CONFIG_CPU_ICACHE_DISABLE is not set CONFIG_CPU_PABRT_V7=y CONFIG_CPU_PM=y CONFIG_CPU_RMAP=y +# CONFIG_CPU_THERMAL is not set CONFIG_CPU_TLB_V7=y CONFIG_CPU_V7=y CONFIG_CRC16=y @@ -111,6 +128,7 @@ CONFIG_GENERIC_BUG=y CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y CONFIG_GENERIC_CLOCKEVENTS_BUILD=y +CONFIG_GENERIC_CPUFREQ_KRAIT=y CONFIG_GENERIC_IDLE_POLL_SETUP=y CONFIG_GENERIC_IO=y CONFIG_GENERIC_IRQ_SHOW=y @@ -203,6 +221,10 @@ CONFIG_IRQCHIP=y CONFIG_IRQ_DOMAIN=y CONFIG_IRQ_FORCED_THREADING=y CONFIG_IRQ_WORK=y +CONFIG_KPSS_XCC=y +CONFIG_KRAITCC=y +CONFIG_KRAIT_CLOCKS=y +CONFIG_KRAIT_L2_ACCESSORS=y # CONFIG_LEDS_REGULATOR is not set CONFIG_LIBFDT=y CONFIG_LOCKUP_DETECTOR=y @@ -281,6 +303,7 @@ CONFIG_PINCTRL_MSM8X74=y CONFIG_PM=y CONFIG_PM_CLK=y # CONFIG_PM_DEBUG is not set +CONFIG_PM_OPP=y CONFIG_PM_SLEEP=y CONFIG_PM_SLEEP_SMP=y CONFIG_POWER_RESET=y @@ -299,6 +322,7 @@ CONFIG_PRINTK_TIME=y CONFIG_PROC_PAGE_MONITOR=y CONFIG_QCOM_BAM_DMA=y CONFIG_QCOM_GSBI=y +CONFIG_QCOM_HFPLL=y CONFIG_QCOM_SCM=y CONFIG_QCOM_WDT=y CONFIG_RAS=y diff --git a/target/linux/ipq806x/config-4.0 b/target/linux/ipq806x/config-4.0 index 61535da561..3c739e6b5e 100644 --- a/target/linux/ipq806x/config-4.0 +++ b/target/linux/ipq806x/config-4.0 @@ -41,10 +41,12 @@ CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y CONFIG_ARM_CPU_SUSPEND=y CONFIG_ARM_GIC=y CONFIG_ARM_HAS_SG_CHAIN=y +# CONFIG_ARM_KIRKWOOD_CPUFREQ is not set CONFIG_ARM_L1_CACHE_SHIFT=6 CONFIG_ARM_L1_CACHE_SHIFT_6=y # CONFIG_ARM_LPAE is not set CONFIG_ARM_PATCH_PHYS_VIRT=y +CONFIG_ARM_QCOM_CPUFREQ=y # CONFIG_ARM_SMMU is not set # CONFIG_ARM_SP805_WATCHDOG is not set CONFIG_ARM_THUMB=y @@ -66,6 +68,7 @@ CONFIG_COMMON_CLK=y CONFIG_COMMON_CLK_QCOM=y CONFIG_COMPACTION=y CONFIG_COREDUMP=y +# CONFIG_CPUFREQ_DT is not set CONFIG_CPU_32v6K=y CONFIG_CPU_32v7=y CONFIG_CPU_ABRT_EV7=y @@ -76,11 +79,25 @@ CONFIG_CPU_CACHE_VIPT=y CONFIG_CPU_COPY_V6=y CONFIG_CPU_CP15=y CONFIG_CPU_CP15_MMU=y +CONFIG_CPU_FREQ=y +# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set +# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set +CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y +# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set +# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set +# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set +# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set +CONFIG_CPU_FREQ_GOV_PERFORMANCE=y +# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set +# CONFIG_CPU_FREQ_GOV_USERSPACE is not set +CONFIG_CPU_FREQ_STAT=y +# CONFIG_CPU_FREQ_STAT_DETAILS is not set CONFIG_CPU_HAS_ASID=y # CONFIG_CPU_ICACHE_DISABLE is not set CONFIG_CPU_PABRT_V7=y CONFIG_CPU_PM=y CONFIG_CPU_RMAP=y +# CONFIG_CPU_THERMAL is not set CONFIG_CPU_TLB_V7=y CONFIG_CPU_V7=y CONFIG_CRC16=y @@ -114,6 +131,7 @@ CONFIG_GENERIC_BUG=y CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y CONFIG_GENERIC_CLOCKEVENTS_BUILD=y +CONFIG_GENERIC_CPUFREQ_KRAIT=y CONFIG_GENERIC_IDLE_POLL_SETUP=y CONFIG_GENERIC_IO=y CONFIG_GENERIC_IRQ_SHOW=y @@ -209,6 +227,10 @@ CONFIG_IRQ_DOMAIN=y CONFIG_IRQ_DOMAIN_HIERARCHY=y CONFIG_IRQ_FORCED_THREADING=y CONFIG_IRQ_WORK=y +CONFIG_KPSS_XCC=y +CONFIG_KRAITCC=y +CONFIG_KRAIT_CLOCKS=y +CONFIG_KRAIT_L2_ACCESSORS=y # CONFIG_LEDS_REGULATOR is not set CONFIG_LIBFDT=y CONFIG_LOCKUP_DETECTOR=y @@ -222,6 +244,7 @@ CONFIG_MDIO_BOARDINFO=y CONFIG_MDIO_GPIO=y CONFIG_MFD_QCOM_RPM=y # CONFIG_MFD_SPMI_PMIC is not set +CONFIG_MFD_SYSCON=y CONFIG_MIGHT_HAVE_CACHE_L2X0=y CONFIG_MIGHT_HAVE_PCI=y CONFIG_MIGRATION=y @@ -293,6 +316,7 @@ CONFIG_PINCTRL_MSM8X74=y CONFIG_PM=y CONFIG_PM_CLK=y # CONFIG_PM_DEBUG is not set +CONFIG_PM_OPP=y CONFIG_PM_SLEEP=y CONFIG_PM_SLEEP_SMP=y CONFIG_POWER_RESET=y @@ -311,6 +335,7 @@ CONFIG_PRINTK_TIME=y CONFIG_PROC_PAGE_MONITOR=y CONFIG_QCOM_BAM_DMA=y CONFIG_QCOM_GSBI=y +CONFIG_QCOM_HFPLL=y CONFIG_QCOM_SCM=y CONFIG_QCOM_WDT=y CONFIG_RAS=y diff --git a/target/linux/ipq806x/patches-3.18/130-clk_mux-Fix-set_parent-doing-the-wrong-thing-when-IN.patch b/target/linux/ipq806x/patches-3.18/130-clk_mux-Fix-set_parent-doing-the-wrong-thing-when-IN.patch new file mode 100644 index 0000000000..d943ad511d --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/130-clk_mux-Fix-set_parent-doing-the-wrong-thing-when-IN.patch @@ -0,0 +1,60 @@ +From 6793b3cd5da817c4be218bd8632f07cf4d2b0d26 Mon Sep 17 00:00:00 2001 +From: Hans de Goede <hdegoede@redhat.com> +Date: Wed, 19 Nov 2014 14:48:59 +0100 +Subject: [PATCH] clk_mux: Fix set_parent doing the wrong thing when INDEX_BIT + && index >= 3 + +If CLK_MUX_INDEX_BIT is set, then each bit turns on / off a single parent, +so theoretically multiple parents could be enabled at the same time, but in +practice only one bit should ever be 1. So to select parent 0, set +the register (*) to 0x01, to select parent 1 set it 0x02, parent 2, 0x04, +parent 3, 0x08, etc. + +But the current code does: + + if (mux->flags & CLK_MUX_INDEX_BIT) + index = (1 << ffs(index)); + +Which means that: + +For an input index of 0, ffs returns 0, so we set the register +to 0x01, ok. + +For an input index of 1, ffs returns 1, so we set the register +to 0x02, ok. + +For an input index of 2, ffs returns 2, so we set the register +to 0x04, ok. + +For an input index of 3, ffs returns 1, so we set the register +to 0x02, not good! + +The code should simply be: + + if (mux->flags & CLK_MUX_INDEX_BIT) + index = 1 << index; + +Which always does the right thing, this commit fixes this. + +Signed-off-by: Hans de Goede <hdegoede@redhat.com> +Signed-off-by: Michael Turquette <mturquette@linaro.org> +--- + drivers/clk/clk-mux.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c +index 4f96ff3..6e1ecf9 100644 +--- a/drivers/clk/clk-mux.c ++++ b/drivers/clk/clk-mux.c +@@ -77,7 +77,7 @@ static int clk_mux_set_parent(struct clk_hw *hw, u8 index) + + else { + if (mux->flags & CLK_MUX_INDEX_BIT) +- index = (1 << ffs(index)); ++ index = 1 << index; + + if (mux->flags & CLK_MUX_INDEX_ONE) + index++; +-- +2.1.4 + diff --git a/target/linux/ipq806x/patches-3.18/131-clk-Add-__clk_mux_determine_rate_closest.patch b/target/linux/ipq806x/patches-3.18/131-clk-Add-__clk_mux_determine_rate_closest.patch new file mode 100644 index 0000000000..18972f3537 --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/131-clk-Add-__clk_mux_determine_rate_closest.patch @@ -0,0 +1,120 @@ +From 15a02c1f6dd7c2bb150c61d00ffb33f584ff2288 Mon Sep 17 00:00:00 2001 +From: Stephen Boyd <sboyd@codeaurora.org> +Date: Mon, 19 Jan 2015 18:05:28 -0800 +Subject: [PATCH] clk: Add __clk_mux_determine_rate_closest + +Some clock drivers want to find the closest rate on the input of +a mux instead of a rate that's less than or equal to the desired +rate. Add a generic mux function to support this. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> +Tested-by: Kenneth Westfield <kwestfie@codeaurora.org> +Signed-off-by: Michael Turquette <mturquette@linaro.org> +--- + drivers/clk/clk.c | 47 +++++++++++++++++++++++++++++++++++--------- + include/linux/clk-provider.h | 8 +++++++- + 2 files changed, 45 insertions(+), 10 deletions(-) + +--- a/drivers/clk/clk.c ++++ b/drivers/clk/clk.c +@@ -695,14 +695,20 @@ struct clk *__clk_lookup(const char *nam + return NULL; + } + +-/* +- * Helper for finding best parent to provide a given frequency. This can be used +- * directly as a determine_rate callback (e.g. for a mux), or from a more +- * complex clock that may combine a mux with other operations. +- */ +-long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate, +- unsigned long *best_parent_rate, +- struct clk **best_parent_p) ++static bool mux_is_better_rate(unsigned long rate, unsigned long now, ++ unsigned long best, unsigned long flags) ++{ ++ if (flags & CLK_MUX_ROUND_CLOSEST) ++ return abs(now - rate) < abs(best - rate); ++ ++ return now <= rate && now > best; ++} ++ ++static long ++clk_mux_determine_rate_flags(struct clk_hw *hw, unsigned long rate, ++ unsigned long *best_parent_rate, ++ struct clk **best_parent_p, ++ unsigned long flags) + { + struct clk *clk = hw->clk, *parent, *best_parent = NULL; + int i, num_parents; +@@ -730,7 +736,7 @@ long __clk_mux_determine_rate(struct clk + parent_rate = __clk_round_rate(parent, rate); + else + parent_rate = __clk_get_rate(parent); +- if (parent_rate <= rate && parent_rate > best) { ++ if (mux_is_better_rate(rate, parent_rate, best, flags)) { + best_parent = parent; + best = parent_rate; + } +@@ -743,8 +749,31 @@ out: + + return best; + } ++ ++/* ++ * Helper for finding best parent to provide a given frequency. This can be used ++ * directly as a determine_rate callback (e.g. for a mux), or from a more ++ * complex clock that may combine a mux with other operations. ++ */ ++long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate, ++ unsigned long *best_parent_rate, ++ struct clk **best_parent_p) ++{ ++ return clk_mux_determine_rate_flags(hw, rate, best_parent_rate, ++ best_parent_p, 0); ++} + EXPORT_SYMBOL_GPL(__clk_mux_determine_rate); + ++long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate, ++ unsigned long *best_parent_rate, ++ struct clk **best_parent_p) ++{ ++ return clk_mux_determine_rate_flags(hw, rate, best_parent_rate, ++ best_parent_p, ++ CLK_MUX_ROUND_CLOSEST); ++} ++EXPORT_SYMBOL_GPL(__clk_mux_determine_rate_closest); ++ + /*** clk api ***/ + + void __clk_unprepare(struct clk *clk) +--- a/include/linux/clk-provider.h ++++ b/include/linux/clk-provider.h +@@ -382,6 +382,8 @@ struct clk *clk_register_divider_table(s + * register, and mask of mux bits are in higher 16-bit of this register. + * While setting the mux bits, higher 16-bit should also be updated to + * indicate changing mux bits. ++ * CLK_MUX_ROUND_CLOSEST - Use the parent rate that is closest to the desired ++ * frequency. + */ + struct clk_mux { + struct clk_hw hw; +@@ -396,7 +398,8 @@ struct clk_mux { + #define CLK_MUX_INDEX_ONE BIT(0) + #define CLK_MUX_INDEX_BIT BIT(1) + #define CLK_MUX_HIWORD_MASK BIT(2) +-#define CLK_MUX_READ_ONLY BIT(3) /* mux setting cannot be changed */ ++#define CLK_MUX_READ_ONLY BIT(3) /* mux can't be changed */ ++#define CLK_MUX_ROUND_CLOSEST BIT(4) + + extern const struct clk_ops clk_mux_ops; + extern const struct clk_ops clk_mux_ro_ops; +@@ -554,6 +557,9 @@ struct clk *__clk_lookup(const char *nam + long __clk_mux_determine_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *best_parent_rate, + struct clk **best_parent_p); ++long __clk_mux_determine_rate_closest(struct clk_hw *hw, unsigned long rate, ++ unsigned long *best_parent_rate, ++ struct clk **best_parent_p); + + /* + * FIXME clock api without lock protection diff --git a/target/linux/ipq806x/patches-3.18/132-clk-Add-clk_unregister_-divider-gate-mux-to-close-me.patch b/target/linux/ipq806x/patches-3.18/132-clk-Add-clk_unregister_-divider-gate-mux-to-close-me.patch new file mode 100644 index 0000000000..127afd265f --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/132-clk-Add-clk_unregister_-divider-gate-mux-to-close-me.patch @@ -0,0 +1,115 @@ +From 4e3c021fb995bcbb5d1f814d00584cb80eb904a8 Mon Sep 17 00:00:00 2001 +From: Krzysztof Kozlowski <k.kozlowski@samsung.com> +Date: Mon, 5 Jan 2015 10:52:40 +0100 +Subject: [PATCH] clk: Add clk_unregister_{divider, gate, mux} to close memory + leak + +The common clk_register_{divider,gate,mux} functions allocated memory +for internal data which wasn't freed anywhere. Drivers using these +helpers could only unregister clocks but the memory would still leak. + +Add corresponding unregister functions which will release all resources. + +Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> +Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> +Signed-off-by: Michael Turquette <mturquette@linaro.org> +--- + drivers/clk/clk-divider.c | 16 ++++++++++++++++ + drivers/clk/clk-gate.c | 16 ++++++++++++++++ + drivers/clk/clk-mux.c | 16 ++++++++++++++++ + include/linux/clk-provider.h | 4 ++++ + 4 files changed, 52 insertions(+) + +--- a/drivers/clk/clk-divider.c ++++ b/drivers/clk/clk-divider.c +@@ -463,3 +463,19 @@ struct clk *clk_register_divider_table(s + width, clk_divider_flags, table, lock); + } + EXPORT_SYMBOL_GPL(clk_register_divider_table); ++ ++void clk_unregister_divider(struct clk *clk) ++{ ++ struct clk_divider *div; ++ struct clk_hw *hw; ++ ++ hw = __clk_get_hw(clk); ++ if (!hw) ++ return; ++ ++ div = to_clk_divider(hw); ++ ++ clk_unregister(clk); ++ kfree(div); ++} ++EXPORT_SYMBOL_GPL(clk_unregister_divider); +--- a/drivers/clk/clk-gate.c ++++ b/drivers/clk/clk-gate.c +@@ -162,3 +162,19 @@ struct clk *clk_register_gate(struct dev + return clk; + } + EXPORT_SYMBOL_GPL(clk_register_gate); ++ ++void clk_unregister_gate(struct clk *clk) ++{ ++ struct clk_gate *gate; ++ struct clk_hw *hw; ++ ++ hw = __clk_get_hw(clk); ++ if (!hw) ++ return; ++ ++ gate = to_clk_gate(hw); ++ ++ clk_unregister(clk); ++ kfree(gate); ++} ++EXPORT_SYMBOL_GPL(clk_unregister_gate); +--- a/drivers/clk/clk-mux.c ++++ b/drivers/clk/clk-mux.c +@@ -177,3 +177,19 @@ struct clk *clk_register_mux(struct devi + NULL, lock); + } + EXPORT_SYMBOL_GPL(clk_register_mux); ++ ++void clk_unregister_mux(struct clk *clk) ++{ ++ struct clk_mux *mux; ++ struct clk_hw *hw; ++ ++ hw = __clk_get_hw(clk); ++ if (!hw) ++ return; ++ ++ mux = to_clk_mux(hw); ++ ++ clk_unregister(clk); ++ kfree(mux); ++} ++EXPORT_SYMBOL_GPL(clk_unregister_mux); +--- a/include/linux/clk-provider.h ++++ b/include/linux/clk-provider.h +@@ -294,6 +294,7 @@ struct clk *clk_register_gate(struct dev + const char *parent_name, unsigned long flags, + void __iomem *reg, u8 bit_idx, + u8 clk_gate_flags, spinlock_t *lock); ++void clk_unregister_gate(struct clk *clk); + + struct clk_div_table { + unsigned int val; +@@ -361,6 +362,7 @@ struct clk *clk_register_divider_table(s + void __iomem *reg, u8 shift, u8 width, + u8 clk_divider_flags, const struct clk_div_table *table, + spinlock_t *lock); ++void clk_unregister_divider(struct clk *clk); + + /** + * struct clk_mux - multiplexer clock +@@ -414,6 +416,8 @@ struct clk *clk_register_mux_table(struc + void __iomem *reg, u8 shift, u32 mask, + u8 clk_mux_flags, u32 *table, spinlock_t *lock); + ++void clk_unregister_mux(struct clk *clk); ++ + void of_fixed_factor_clk_setup(struct device_node *node); + + /** diff --git a/target/linux/ipq806x/patches-3.18/133-ARM-Add-Krait-L2-register-accessor-functions.patch b/target/linux/ipq806x/patches-3.18/133-ARM-Add-Krait-L2-register-accessor-functions.patch new file mode 100644 index 0000000000..36a92c858a --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/133-ARM-Add-Krait-L2-register-accessor-functions.patch @@ -0,0 +1,144 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,01/13] ARM: Add Krait L2 register accessor functions +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063051 +Message-Id: <1426920332-9340-2-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org>, + Mark Rutland <mark.rutland@arm.com>, Russell King <linux@arm.linux.org.uk>, + Courtney Cavin <courtney.cavin@sonymobile.com> +Date: Fri, 20 Mar 2015 23:45:20 -0700 + +Krait CPUs have a handful of L2 cache controller registers that +live behind a cp15 based indirection register. First you program +the indirection register (l2cpselr) to point the L2 'window' +register (l2cpdr) at what you want to read/write. Then you +read/write the 'window' register to do what you want. The +l2cpselr register is not banked per-cpu so we must lock around +accesses to it to prevent other CPUs from re-pointing l2cpdr +underneath us. + +Cc: Mark Rutland <mark.rutland@arm.com> +Cc: Russell King <linux@arm.linux.org.uk> +Cc: Courtney Cavin <courtney.cavin@sonymobile.com> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +arch/arm/common/Kconfig | 3 ++ + arch/arm/common/Makefile | 1 + + arch/arm/common/krait-l2-accessors.c | 58 +++++++++++++++++++++++++++++++ + arch/arm/include/asm/krait-l2-accessors.h | 20 +++++++++++ + 4 files changed, 82 insertions(+) + create mode 100644 arch/arm/common/krait-l2-accessors.c + create mode 100644 arch/arm/include/asm/krait-l2-accessors.h + +--- a/arch/arm/common/Kconfig ++++ b/arch/arm/common/Kconfig +@@ -9,6 +9,9 @@ config DMABOUNCE + bool + select ZONE_DMA + ++config KRAIT_L2_ACCESSORS ++ bool ++ + config SHARP_LOCOMO + bool + +--- a/arch/arm/common/Makefile ++++ b/arch/arm/common/Makefile +@@ -7,6 +7,7 @@ obj-y += firmware.o + obj-$(CONFIG_ICST) += icst.o + obj-$(CONFIG_SA1111) += sa1111.o + obj-$(CONFIG_DMABOUNCE) += dmabounce.o ++obj-$(CONFIG_KRAIT_L2_ACCESSORS) += krait-l2-accessors.o + obj-$(CONFIG_SHARP_LOCOMO) += locomo.o + obj-$(CONFIG_SHARP_PARAM) += sharpsl_param.o + obj-$(CONFIG_SHARP_SCOOP) += scoop.o +--- /dev/null ++++ b/arch/arm/common/krait-l2-accessors.c +@@ -0,0 +1,58 @@ ++/* ++ * Copyright (c) 2011-2013, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/spinlock.h> ++#include <linux/export.h> ++ ++#include <asm/barrier.h> ++#include <asm/krait-l2-accessors.h> ++ ++static DEFINE_RAW_SPINLOCK(krait_l2_lock); ++ ++void krait_set_l2_indirect_reg(u32 addr, u32 val) ++{ ++ unsigned long flags; ++ ++ raw_spin_lock_irqsave(&krait_l2_lock, flags); ++ /* ++ * Select the L2 window by poking l2cpselr, then write to the window ++ * via l2cpdr. ++ */ ++ asm volatile ("mcr p15, 3, %0, c15, c0, 6 @ l2cpselr" : : "r" (addr)); ++ isb(); ++ asm volatile ("mcr p15, 3, %0, c15, c0, 7 @ l2cpdr" : : "r" (val)); ++ isb(); ++ ++ raw_spin_unlock_irqrestore(&krait_l2_lock, flags); ++} ++EXPORT_SYMBOL(krait_set_l2_indirect_reg); ++ ++u32 krait_get_l2_indirect_reg(u32 addr) ++{ ++ u32 val; ++ unsigned long flags; ++ ++ raw_spin_lock_irqsave(&krait_l2_lock, flags); ++ /* ++ * Select the L2 window by poking l2cpselr, then read from the window ++ * via l2cpdr. ++ */ ++ asm volatile ("mcr p15, 3, %0, c15, c0, 6 @ l2cpselr" : : "r" (addr)); ++ isb(); ++ asm volatile ("mrc p15, 3, %0, c15, c0, 7 @ l2cpdr" : "=r" (val)); ++ ++ raw_spin_unlock_irqrestore(&krait_l2_lock, flags); ++ ++ return val; ++} ++EXPORT_SYMBOL(krait_get_l2_indirect_reg); +--- /dev/null ++++ b/arch/arm/include/asm/krait-l2-accessors.h +@@ -0,0 +1,20 @@ ++/* ++ * Copyright (c) 2011-2013, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#ifndef __ASMARM_KRAIT_L2_ACCESSORS_H ++#define __ASMARM_KRAIT_L2_ACCESSORS_H ++ ++extern void krait_set_l2_indirect_reg(u32 addr, u32 val); ++extern u32 krait_get_l2_indirect_reg(u32 addr); ++ ++#endif diff --git a/target/linux/ipq806x/patches-3.18/134-clk-mux-Split-out-register-accessors-for-reuse.patch b/target/linux/ipq806x/patches-3.18/134-clk-mux-Split-out-register-accessors-for-reuse.patch new file mode 100644 index 0000000000..50022e6107 --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/134-clk-mux-Split-out-register-accessors-for-reuse.patch @@ -0,0 +1,192 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,02/13] clk: mux: Split out register accessors for reuse +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063111 +Message-Id: <1426920332-9340-3-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:21 -0700 + +We want to reuse the logic in clk-mux.c for other clock drivers +that don't use readl as register accessors. Fortunately, there +really isn't much to the mux code besides the table indirection +and quirk flags if you assume any bit shifting and masking has +been done already. Pull that logic out into reusable functions +that operate on an optional table and some flags so that other +drivers can use the same logic. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +drivers/clk/clk-mux.c | 76 +++++++++++++++++++++++++++----------------- + include/linux/clk-provider.h | 9 ++++-- + 2 files changed, 54 insertions(+), 31 deletions(-) + +--- a/drivers/clk/clk-mux.c ++++ b/drivers/clk/clk-mux.c +@@ -29,35 +29,24 @@ + + #define to_clk_mux(_hw) container_of(_hw, struct clk_mux, hw) + +-static u8 clk_mux_get_parent(struct clk_hw *hw) ++unsigned int clk_mux_get_parent(struct clk_hw *hw, unsigned int val, ++ unsigned int *table, unsigned long flags) + { +- struct clk_mux *mux = to_clk_mux(hw); + int num_parents = __clk_get_num_parents(hw->clk); +- u32 val; + +- /* +- * FIXME need a mux-specific flag to determine if val is bitwise or numeric +- * e.g. sys_clkin_ck's clksel field is 3 bits wide, but ranges from 0x1 +- * to 0x7 (index starts at one) +- * OTOH, pmd_trace_clk_mux_ck uses a separate bit for each clock, so +- * val = 0x4 really means "bit 2, index starts at bit 0" +- */ +- val = clk_readl(mux->reg) >> mux->shift; +- val &= mux->mask; +- +- if (mux->table) { ++ if (table) { + int i; + + for (i = 0; i < num_parents; i++) +- if (mux->table[i] == val) ++ if (table[i] == val) + return i; + return -EINVAL; + } + +- if (val && (mux->flags & CLK_MUX_INDEX_BIT)) ++ if (val && (flags & CLK_MUX_INDEX_BIT)) + val = ffs(val) - 1; + +- if (val && (mux->flags & CLK_MUX_INDEX_ONE)) ++ if (val && (flags & CLK_MUX_INDEX_ONE)) + val--; + + if (val >= num_parents) +@@ -65,24 +54,53 @@ static u8 clk_mux_get_parent(struct clk_ + + return val; + } ++EXPORT_SYMBOL_GPL(clk_mux_get_parent); + +-static int clk_mux_set_parent(struct clk_hw *hw, u8 index) ++static u8 _clk_mux_get_parent(struct clk_hw *hw) + { + struct clk_mux *mux = to_clk_mux(hw); + u32 val; +- unsigned long flags = 0; + +- if (mux->table) +- index = mux->table[index]; ++ /* ++ * FIXME need a mux-specific flag to determine if val is bitwise or numeric ++ * e.g. sys_clkin_ck's clksel field is 3 bits wide, but ranges from 0x1 ++ * to 0x7 (index starts at one) ++ * OTOH, pmd_trace_clk_mux_ck uses a separate bit for each clock, so ++ * val = 0x4 really means "bit 2, index starts at bit 0" ++ */ ++ val = clk_readl(mux->reg) >> mux->shift; ++ val &= mux->mask; ++ ++ return clk_mux_get_parent(hw, val, mux->table, mux->flags); ++} + +- else { +- if (mux->flags & CLK_MUX_INDEX_BIT) +- index = 1 << index; ++unsigned int clk_mux_reindex(u8 index, unsigned int *table, ++ unsigned long flags) ++{ ++ unsigned int val = index; + +- if (mux->flags & CLK_MUX_INDEX_ONE) +- index++; ++ if (table) { ++ val = table[val]; ++ } else { ++ if (flags & CLK_MUX_INDEX_BIT) ++ val = 1 << index; ++ ++ if (flags & CLK_MUX_INDEX_ONE) ++ val++; + } + ++ return val; ++} ++EXPORT_SYMBOL_GPL(clk_mux_reindex); ++ ++static int clk_mux_set_parent(struct clk_hw *hw, u8 index) ++{ ++ struct clk_mux *mux = to_clk_mux(hw); ++ u32 val; ++ unsigned long flags = 0; ++ ++ index = clk_mux_reindex(index, mux->table, mux->flags); ++ + if (mux->lock) + spin_lock_irqsave(mux->lock, flags); + +@@ -102,21 +120,21 @@ static int clk_mux_set_parent(struct clk + } + + const struct clk_ops clk_mux_ops = { +- .get_parent = clk_mux_get_parent, ++ .get_parent = _clk_mux_get_parent, + .set_parent = clk_mux_set_parent, + .determine_rate = __clk_mux_determine_rate, + }; + EXPORT_SYMBOL_GPL(clk_mux_ops); + + const struct clk_ops clk_mux_ro_ops = { +- .get_parent = clk_mux_get_parent, ++ .get_parent = _clk_mux_get_parent, + }; + EXPORT_SYMBOL_GPL(clk_mux_ro_ops); + + struct clk *clk_register_mux_table(struct device *dev, const char *name, + const char **parent_names, u8 num_parents, unsigned long flags, + void __iomem *reg, u8 shift, u32 mask, +- u8 clk_mux_flags, u32 *table, spinlock_t *lock) ++ u8 clk_mux_flags, unsigned int *table, spinlock_t *lock) + { + struct clk_mux *mux; + struct clk *clk; +--- a/include/linux/clk-provider.h ++++ b/include/linux/clk-provider.h +@@ -390,7 +390,7 @@ void clk_unregister_divider(struct clk * + struct clk_mux { + struct clk_hw hw; + void __iomem *reg; +- u32 *table; ++ unsigned int *table; + u32 mask; + u8 shift; + u8 flags; +@@ -406,6 +406,11 @@ struct clk_mux { + extern const struct clk_ops clk_mux_ops; + extern const struct clk_ops clk_mux_ro_ops; + ++unsigned int clk_mux_get_parent(struct clk_hw *hw, unsigned int val, ++ unsigned int *table, unsigned long flags); ++unsigned int clk_mux_reindex(u8 index, unsigned int *table, ++ unsigned long flags); ++ + struct clk *clk_register_mux(struct device *dev, const char *name, + const char **parent_names, u8 num_parents, unsigned long flags, + void __iomem *reg, u8 shift, u8 width, +@@ -414,7 +419,7 @@ struct clk *clk_register_mux(struct devi + struct clk *clk_register_mux_table(struct device *dev, const char *name, + const char **parent_names, u8 num_parents, unsigned long flags, + void __iomem *reg, u8 shift, u32 mask, +- u8 clk_mux_flags, u32 *table, spinlock_t *lock); ++ u8 clk_mux_flags, unsigned int *table, spinlock_t *lock); + + void clk_unregister_mux(struct clk *clk); + diff --git a/target/linux/ipq806x/patches-3.18/135-clk-Avoid-sending-high-rates-to-downstream-clocks-during-set_rate.patch b/target/linux/ipq806x/patches-3.18/135-clk-Avoid-sending-high-rates-to-downstream-clocks-during-set_rate.patch new file mode 100644 index 0000000000..02d96ad08a --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/135-clk-Avoid-sending-high-rates-to-downstream-clocks-during-set_rate.patch @@ -0,0 +1,129 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3, 03/13] clk: Avoid sending high rates to downstream clocks during + set_rate +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063271 +Message-Id: <1426920332-9340-4-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:22 -0700 + +If a clock is on and we call clk_set_rate() on it we may get into +a situation where the clock temporarily increases in rate +dramatically while we walk the tree and call .set_rate() ops. For +example, consider a case where a PLL feeds into a divider. +Initially the divider is set to divide by 1 and the PLL is +running fairly slow (100MHz). The downstream consumer of the +divider output can only handle rates =< 400 MHz, but the divider +can only choose between divisors of 1 and 4. + + +-----+ +----------------+ + | PLL |-->| div 1 or div 4 |---> consumer device + +-----+ +----------------+ + +To achieve a rate of 400MHz on the output of the divider, we +would have to set the rate of the PLL to 1.6 GHz and then divide +it by 4. The current code would set the PLL to 1.6GHz first while +the divider is still set to 1, thus causing the downstream +consumer of the clock to receive a few clock cycles of 1.6GHz +clock (far beyond it's maximum acceptable rate). We should be +changing the divider first before increasing the PLL rate to +avoid this problem. + +Therefore, set the rate of any child clocks that are increasing +in rate from their current rate so that they can increase their +dividers if necessary. We assume that there isn't such a thing as +minimum rate requirements. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +drivers/clk/clk.c | 34 ++++++++++++++++++++++------------ + 1 file changed, 22 insertions(+), 12 deletions(-) + +--- a/drivers/clk/clk.c ++++ b/drivers/clk/clk.c +@@ -1476,21 +1476,23 @@ static struct clk *clk_propagate_rate_ch + * walk down a subtree and set the new rates notifying the rate + * change on the way + */ +-static void clk_change_rate(struct clk *clk) ++static void clk_change_rate(struct clk *clk, unsigned long best_parent_rate) + { + struct clk *child; + struct hlist_node *tmp; + unsigned long old_rate; +- unsigned long best_parent_rate = 0; + bool skip_set_rate = false; + struct clk *old_parent; + +- old_rate = clk->rate; ++ hlist_for_each_entry(child, &clk->children, child_node) { ++ /* Skip children who will be reparented to another clock */ ++ if (child->new_parent && child->new_parent != clk) ++ continue; ++ if (child->new_rate > child->rate) ++ clk_change_rate(child, clk->new_rate); ++ } + +- if (clk->new_parent) +- best_parent_rate = clk->new_parent->rate; +- else if (clk->parent) +- best_parent_rate = clk->parent->rate; ++ old_rate = clk->rate; + + if (clk->new_parent && clk->new_parent != clk->parent) { + old_parent = __clk_set_parent_before(clk, clk->new_parent); +@@ -1510,7 +1512,7 @@ static void clk_change_rate(struct clk * + if (!skip_set_rate && clk->ops->set_rate) + clk->ops->set_rate(clk->hw, clk->new_rate, best_parent_rate); + +- clk->rate = clk_recalc(clk, best_parent_rate); ++ clk->rate = clk->new_rate; + + if (clk->notifier_count && old_rate != clk->rate) + __clk_notify(clk, POST_RATE_CHANGE, old_rate, clk->rate); +@@ -1523,12 +1525,13 @@ static void clk_change_rate(struct clk * + /* Skip children who will be reparented to another clock */ + if (child->new_parent && child->new_parent != clk) + continue; +- clk_change_rate(child); ++ if (child->new_rate != child->rate) ++ clk_change_rate(child, clk->new_rate); + } + + /* handle the new child who might not be in clk->children yet */ +- if (clk->new_child) +- clk_change_rate(clk->new_child); ++ if (clk->new_child && clk->new_child->new_rate != clk->new_child->rate) ++ clk_change_rate(clk->new_child, clk->new_rate); + } + + /** +@@ -1556,6 +1559,7 @@ int clk_set_rate(struct clk *clk, unsign + { + struct clk *top, *fail_clk; + int ret = 0; ++ unsigned long parent_rate; + + if (!clk) + return 0; +@@ -1589,8 +1593,13 @@ int clk_set_rate(struct clk *clk, unsign + goto out; + } + ++ if (top->parent) ++ parent_rate = top->parent->rate; ++ else ++ parent_rate = 0; ++ + /* change the rates */ +- clk_change_rate(top); ++ clk_change_rate(top, parent_rate); + + out: + clk_prepare_unlock(); diff --git a/target/linux/ipq806x/patches-3.18/136-clk-Add-safe-switch-hook.patch b/target/linux/ipq806x/patches-3.18/136-clk-Add-safe-switch-hook.patch new file mode 100644 index 0000000000..227f8cea05 --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/136-clk-Add-safe-switch-hook.patch @@ -0,0 +1,170 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,04/13] clk: Add safe switch hook +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063211 +Message-Id: <1426920332-9340-5-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:23 -0700 + +Sometimes clocks can't accept their parent source turning off +while the source is reprogrammed to a different rate. Most +notably CPU clocks require a way to switch away from the current +PLL they're running on, reprogram that PLL to a new rate, and +then switch back to the PLL with the new rate once they're done. +Add a hook that drivers can implement allowing them to return a +'safe parent' that they can switch their parent to while the +upstream source is reprogrammed to support this. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +This patch is good enough for Krait, but soon I'll need to +support a "safe rate" where we ask a clock what rate it needs to be running +at to be sure it's within voltage constraints. Right now safe parent +handles that problem on Krait, but on other platforms it won't work. + + drivers/clk/clk.c | 61 ++++++++++++++++++++++++++++++++++++++------ + include/linux/clk-provider.h | 1 + + 2 files changed, 54 insertions(+), 8 deletions(-) + +--- a/drivers/clk/clk.c ++++ b/drivers/clk/clk.c +@@ -1350,7 +1350,8 @@ out: + static void clk_calc_subtree(struct clk *clk, unsigned long new_rate, + struct clk *new_parent, u8 p_index) + { +- struct clk *child; ++ struct clk *child, *parent; ++ struct clk_hw *parent_hw; + + clk->new_rate = new_rate; + clk->new_parent = new_parent; +@@ -1360,6 +1361,18 @@ static void clk_calc_subtree(struct clk + if (new_parent && new_parent != clk->parent) + new_parent->new_child = clk; + ++ if (clk->ops->get_safe_parent) { ++ parent_hw = clk->ops->get_safe_parent(clk->hw); ++ if (parent_hw) { ++ parent = parent_hw->clk; ++ p_index = clk_fetch_parent_index(clk, parent); ++ clk->safe_parent_index = p_index; ++ clk->safe_parent = parent; ++ } ++ } else { ++ clk->safe_parent = NULL; ++ } ++ + hlist_for_each_entry(child, &clk->children, child_node) { + child->new_rate = clk_recalc(child, new_rate); + clk_calc_subtree(child, child->new_rate, NULL, 0); +@@ -1439,17 +1452,47 @@ out: + * so that in case of an error we can walk down the whole tree again and + * abort the change. + */ +-static struct clk *clk_propagate_rate_change(struct clk *clk, unsigned long event) ++static struct clk *clk_propagate_rate_change(struct clk *clk, ++ unsigned long event) + { + struct clk *child, *tmp_clk, *fail_clk = NULL; ++ struct clk *old_parent; + int ret = NOTIFY_DONE; + +- if (clk->rate == clk->new_rate) ++ if (clk->rate == clk->new_rate && event != POST_RATE_CHANGE) + return NULL; + ++ switch (event) { ++ case PRE_RATE_CHANGE: ++ if (clk->safe_parent) ++ clk->ops->set_parent(clk->hw, clk->safe_parent_index); ++ clk->old_rate = clk->rate; ++ break; ++ case POST_RATE_CHANGE: ++ if (clk->safe_parent) { ++ old_parent = __clk_set_parent_before(clk, ++ clk->new_parent); ++ if (clk->ops->set_rate_and_parent) { ++ clk->ops->set_rate_and_parent(clk->hw, ++ clk->new_rate, ++ clk->new_parent ? ++ clk->new_parent->rate : 0, ++ clk->new_parent_index); ++ } else if (clk->ops->set_parent) { ++ clk->ops->set_parent(clk->hw, ++ clk->new_parent_index); ++ } ++ __clk_set_parent_after(clk, clk->new_parent, ++ old_parent); ++ } ++ break; ++ } ++ + if (clk->notifier_count) { +- ret = __clk_notify(clk, event, clk->rate, clk->new_rate); +- if (ret & NOTIFY_STOP_MASK) ++ if (event != POST_RATE_CHANGE || clk->old_rate != clk->rate) ++ ret = __clk_notify(clk, event, clk->old_rate, ++ clk->new_rate); ++ if (ret & NOTIFY_STOP_MASK && event != POST_RATE_CHANGE) + fail_clk = clk; + } + +@@ -1494,7 +1537,8 @@ static void clk_change_rate(struct clk * + + old_rate = clk->rate; + +- if (clk->new_parent && clk->new_parent != clk->parent) { ++ if (clk->new_parent && clk->new_parent != clk->parent && ++ !clk->safe_parent) { + old_parent = __clk_set_parent_before(clk, clk->new_parent); + + if (clk->ops->set_rate_and_parent) { +@@ -1514,9 +1558,6 @@ static void clk_change_rate(struct clk * + + clk->rate = clk->new_rate; + +- if (clk->notifier_count && old_rate != clk->rate) +- __clk_notify(clk, POST_RATE_CHANGE, old_rate, clk->rate); +- + /* + * Use safe iteration, as change_rate can actually swap parents + * for certain clock types. +@@ -1601,6 +1642,8 @@ int clk_set_rate(struct clk *clk, unsign + /* change the rates */ + clk_change_rate(top, parent_rate); + ++ clk_propagate_rate_change(top, POST_RATE_CHANGE); ++ + out: + clk_prepare_unlock(); + +--- a/include/linux/clk-provider.h ++++ b/include/linux/clk-provider.h +@@ -179,6 +179,7 @@ struct clk_ops { + struct clk **best_parent_clk); + int (*set_parent)(struct clk_hw *hw, u8 index); + u8 (*get_parent)(struct clk_hw *hw); ++ struct clk_hw *(*get_safe_parent)(struct clk_hw *hw); + int (*set_rate)(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate); + int (*set_rate_and_parent)(struct clk_hw *hw, +--- a/include/linux/clk-private.h ++++ b/include/linux/clk-private.h +@@ -38,8 +38,11 @@ struct clk { + struct clk **parents; + u8 num_parents; + u8 new_parent_index; ++ u8 safe_parent_index; + unsigned long rate; ++ unsigned long old_rate; + unsigned long new_rate; ++ struct clk *safe_parent; + struct clk *new_parent; + struct clk *new_child; + unsigned long flags; diff --git a/target/linux/ipq806x/patches-3.18/137-clk-qcom-Add-support-for-High-Frequency-PLLs-HFPLLs.patch b/target/linux/ipq806x/patches-3.18/137-clk-qcom-Add-support-for-High-Frequency-PLLs-HFPLLs.patch new file mode 100644 index 0000000000..701d5e7046 --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/137-clk-qcom-Add-support-for-High-Frequency-PLLs-HFPLLs.patch @@ -0,0 +1,351 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,05/13] clk: qcom: Add support for High-Frequency PLLs (HFPLLs) +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063261 +Message-Id: <1426920332-9340-6-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:24 -0700 + +HFPLLs are the main frequency source for Krait CPU clocks. Add +support for changing the rate of these PLLs. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +I'd really like to get rid of __clk_hfpll_init_once() if possible... + + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/clk-hfpll.c | 253 +++++++++++++++++++++++++++++++++++++++++++ + drivers/clk/qcom/clk-hfpll.h | 54 +++++++++ + 3 files changed, 308 insertions(+) + create mode 100644 drivers/clk/qcom/clk-hfpll.c + create mode 100644 drivers/clk/qcom/clk-hfpll.h + +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -6,6 +6,7 @@ clk-qcom-y += clk-pll.o + clk-qcom-y += clk-rcg.o + clk-qcom-y += clk-rcg2.o + clk-qcom-y += clk-branch.o ++clk-qcom-y += clk-hfpll.o + clk-qcom-y += reset.o + + obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o +--- /dev/null ++++ b/drivers/clk/qcom/clk-hfpll.c +@@ -0,0 +1,253 @@ ++/* ++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++#include <linux/kernel.h> ++#include <linux/export.h> ++#include <linux/regmap.h> ++#include <linux/delay.h> ++#include <linux/err.h> ++#include <linux/clk-provider.h> ++#include <linux/spinlock.h> ++ ++#include "clk-regmap.h" ++#include "clk-hfpll.h" ++ ++#define PLL_OUTCTRL BIT(0) ++#define PLL_BYPASSNL BIT(1) ++#define PLL_RESET_N BIT(2) ++ ++/* Initialize a HFPLL at a given rate and enable it. */ ++static void __clk_hfpll_init_once(struct clk_hw *hw) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ ++ if (likely(h->init_done)) ++ return; ++ ++ /* Configure PLL parameters for integer mode. */ ++ if (hd->config_val) ++ regmap_write(regmap, hd->config_reg, hd->config_val); ++ regmap_write(regmap, hd->m_reg, 0); ++ regmap_write(regmap, hd->n_reg, 1); ++ ++ if (hd->user_reg) { ++ u32 regval = hd->user_val; ++ unsigned long rate; ++ ++ rate = __clk_get_rate(hw->clk); ++ ++ /* Pick the right VCO. */ ++ if (hd->user_vco_mask && rate > hd->low_vco_max_rate) ++ regval |= hd->user_vco_mask; ++ regmap_write(regmap, hd->user_reg, regval); ++ } ++ ++ if (hd->droop_reg) ++ regmap_write(regmap, hd->droop_reg, hd->droop_val); ++ ++ h->init_done = true; ++} ++ ++static void __clk_hfpll_enable(struct clk_hw *hw) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ u32 val; ++ ++ __clk_hfpll_init_once(hw); ++ ++ /* Disable PLL bypass mode. */ ++ regmap_update_bits(regmap, hd->mode_reg, PLL_BYPASSNL, PLL_BYPASSNL); ++ ++ /* ++ * H/W requires a 5us delay between disabling the bypass and ++ * de-asserting the reset. Delay 10us just to be safe. ++ */ ++ udelay(10); ++ ++ /* De-assert active-low PLL reset. */ ++ regmap_update_bits(regmap, hd->mode_reg, PLL_RESET_N, PLL_RESET_N); ++ ++ /* Wait for PLL to lock. */ ++ if (hd->status_reg) { ++ do { ++ regmap_read(regmap, hd->status_reg, &val); ++ } while (!(val & BIT(hd->lock_bit))); ++ } else { ++ udelay(60); ++ } ++ ++ /* Enable PLL output. */ ++ regmap_update_bits(regmap, hd->mode_reg, PLL_OUTCTRL, PLL_OUTCTRL); ++} ++ ++/* Enable an already-configured HFPLL. */ ++static int clk_hfpll_enable(struct clk_hw *hw) ++{ ++ unsigned long flags; ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ u32 mode; ++ ++ spin_lock_irqsave(&h->lock, flags); ++ regmap_read(regmap, hd->mode_reg, &mode); ++ if (!(mode & (PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL))) ++ __clk_hfpll_enable(hw); ++ spin_unlock_irqrestore(&h->lock, flags); ++ ++ return 0; ++} ++ ++static void __clk_hfpll_disable(struct clk_hfpll *h) ++{ ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ ++ /* ++ * Disable the PLL output, disable test mode, enable the bypass mode, ++ * and assert the reset. ++ */ ++ regmap_update_bits(regmap, hd->mode_reg, ++ PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL, 0); ++} ++ ++static void clk_hfpll_disable(struct clk_hw *hw) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ unsigned long flags; ++ ++ spin_lock_irqsave(&h->lock, flags); ++ __clk_hfpll_disable(h); ++ spin_unlock_irqrestore(&h->lock, flags); ++} ++ ++static long clk_hfpll_round_rate(struct clk_hw *hw, unsigned long rate, ++ unsigned long *parent_rate) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ unsigned long rrate; ++ ++ rate = clamp(rate, hd->min_rate, hd->max_rate); ++ ++ rrate = DIV_ROUND_UP(rate, *parent_rate) * *parent_rate; ++ if (rrate > hd->max_rate) ++ rrate -= *parent_rate; ++ ++ return rrate; ++} ++ ++/* ++ * For optimization reasons, assumes no downstream clocks are actively using ++ * it. ++ */ ++static int clk_hfpll_set_rate(struct clk_hw *hw, unsigned long rate, ++ unsigned long parent_rate) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ unsigned long flags; ++ u32 l_val, val; ++ bool enabled; ++ ++ l_val = rate / parent_rate; ++ ++ spin_lock_irqsave(&h->lock, flags); ++ ++ enabled = __clk_is_enabled(hw->clk); ++ if (enabled) ++ __clk_hfpll_disable(h); ++ ++ /* Pick the right VCO. */ ++ if (hd->user_reg && hd->user_vco_mask) { ++ regmap_read(regmap, hd->user_reg, &val); ++ if (rate <= hd->low_vco_max_rate) ++ val &= ~hd->user_vco_mask; ++ else ++ val |= hd->user_vco_mask; ++ regmap_write(regmap, hd->user_reg, val); ++ } ++ ++ regmap_write(regmap, hd->l_reg, l_val); ++ ++ if (enabled) ++ __clk_hfpll_enable(hw); ++ ++ spin_unlock_irqrestore(&h->lock, flags); ++ ++ return 0; ++} ++ ++static unsigned long clk_hfpll_recalc_rate(struct clk_hw *hw, ++ unsigned long parent_rate) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ u32 l_val; ++ ++ regmap_read(regmap, hd->l_reg, &l_val); ++ ++ return l_val * parent_rate; ++} ++ ++static void clk_hfpll_init(struct clk_hw *hw) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ u32 mode, status; ++ ++ regmap_read(regmap, hd->mode_reg, &mode); ++ if (mode != (PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL)) { ++ __clk_hfpll_init_once(hw); ++ return; ++ } ++ ++ if (hd->status_reg) { ++ regmap_read(regmap, hd->status_reg, &status); ++ if (!(status & BIT(hd->lock_bit))) { ++ WARN(1, "HFPLL %s is ON, but not locked!\n", ++ __clk_get_name(hw->clk)); ++ clk_hfpll_disable(hw); ++ __clk_hfpll_init_once(hw); ++ } ++ } ++} ++ ++static int hfpll_is_enabled(struct clk_hw *hw) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ u32 mode; ++ ++ regmap_read(regmap, hd->mode_reg, &mode); ++ mode &= 0x7; ++ return mode == (PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL); ++} ++ ++const struct clk_ops clk_ops_hfpll = { ++ .enable = clk_hfpll_enable, ++ .disable = clk_hfpll_disable, ++ .is_enabled = hfpll_is_enabled, ++ .round_rate = clk_hfpll_round_rate, ++ .set_rate = clk_hfpll_set_rate, ++ .recalc_rate = clk_hfpll_recalc_rate, ++ .init = clk_hfpll_init, ++}; ++EXPORT_SYMBOL_GPL(clk_ops_hfpll); +--- /dev/null ++++ b/drivers/clk/qcom/clk-hfpll.h +@@ -0,0 +1,54 @@ ++/* ++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++#ifndef __QCOM_CLK_HFPLL_H__ ++#define __QCOM_CLK_HFPLL_H__ ++ ++#include <linux/clk-provider.h> ++#include <linux/spinlock.h> ++#include "clk-regmap.h" ++ ++struct hfpll_data { ++ u32 mode_reg; ++ u32 l_reg; ++ u32 m_reg; ++ u32 n_reg; ++ u32 user_reg; ++ u32 droop_reg; ++ u32 config_reg; ++ u32 status_reg; ++ u8 lock_bit; ++ ++ u32 droop_val; ++ u32 config_val; ++ u32 user_val; ++ u32 user_vco_mask; ++ unsigned long low_vco_max_rate; ++ ++ unsigned long min_rate; ++ unsigned long max_rate; ++}; ++ ++struct clk_hfpll { ++ struct hfpll_data const *d; ++ int init_done; ++ ++ struct clk_regmap clkr; ++ spinlock_t lock; ++}; ++ ++#define to_clk_hfpll(_hw) \ ++ container_of(to_clk_regmap(_hw), struct clk_hfpll, clkr) ++ ++extern const struct clk_ops clk_ops_hfpll; ++ ++#endif diff --git a/target/linux/ipq806x/patches-3.18/138-clk-qcom-Add-HFPLL-driver.patch b/target/linux/ipq806x/patches-3.18/138-clk-qcom-Add-HFPLL-driver.patch new file mode 100644 index 0000000000..a0b1d64dc6 --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/138-clk-qcom-Add-HFPLL-driver.patch @@ -0,0 +1,206 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,06/13] clk: qcom: Add HFPLL driver +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063231 +Message-Id: <1426920332-9340-7-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org> +Date: Fri, 20 Mar 2015 23:45:25 -0700 + +On some devices (MSM8974 for example), the HFPLLs are +instantiated within the Krait processor subsystem as separate +register regions. Add a driver for these PLLs so that we can +provide HFPLL clocks for use by the system. + +Cc: <devicetree@vger.kernel.org> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +.../devicetree/bindings/clock/qcom,hfpll.txt | 40 ++++++++ + drivers/clk/qcom/Kconfig | 8 ++ + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/hfpll.c | 109 +++++++++++++++++++++ + 4 files changed, 158 insertions(+) + create mode 100644 Documentation/devicetree/bindings/clock/qcom,hfpll.txt + create mode 100644 drivers/clk/qcom/hfpll.c + +--- /dev/null ++++ b/Documentation/devicetree/bindings/clock/qcom,hfpll.txt +@@ -0,0 +1,40 @@ ++High-Frequency PLL (HFPLL) ++ ++PROPERTIES ++ ++- compatible: ++ Usage: required ++ Value type: <string> ++ Definition: must be "qcom,hfpll" ++ ++- reg: ++ Usage: required ++ Value type: <prop-encoded-array> ++ Definition: address and size of HPLL registers. An optional second ++ element specifies the address and size of the alias ++ register region. ++ ++- clock-output-names: ++ Usage: required ++ Value type: <string> ++ Definition: Name of the PLL. Typically hfpllX where X is a CPU number ++ starting at 0. Otherwise hfpll_Y where Y is more specific ++ such as "l2". ++ ++Example: ++ ++1) An HFPLL for the L2 cache. ++ ++ clock-controller@f9016000 { ++ compatible = "qcom,hfpll"; ++ reg = <0xf9016000 0x30>; ++ clock-output-names = "hfpll_l2"; ++ }; ++ ++2) An HFPLL for CPU0. This HFPLL has the alias register region. ++ ++ clock-controller@f908a000 { ++ compatible = "qcom,hfpll"; ++ reg = <0xf908a000 0x30>, <0xf900a000 0x30>; ++ clock-output-names = "hfpll0"; ++ }; +--- a/drivers/clk/qcom/Kconfig ++++ b/drivers/clk/qcom/Kconfig +@@ -70,3 +70,11 @@ config MSM_MMCC_8974 + Support for the multimedia clock controller on msm8974 devices. + Say Y if you want to support multimedia devices such as display, + graphics, video encode/decode, camera, etc. ++ ++config QCOM_HFPLL ++ tristate "High-Frequency PLL (HFPLL) Clock Controller" ++ depends on COMMON_CLK_QCOM ++ help ++ Support for the high-frequency PLLs present on Qualcomm devices. ++ Say Y if you want to support CPU frequency scaling on devices ++ such as MSM8974, APQ8084, etc. +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -17,3 +17,4 @@ obj-$(CONFIG_MSM_GCC_8960) += gcc-msm896 + obj-$(CONFIG_MSM_GCC_8974) += gcc-msm8974.o + obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o + obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o ++obj-$(CONFIG_QCOM_HFPLL) += hfpll.o +--- /dev/null ++++ b/drivers/clk/qcom/hfpll.c +@@ -0,0 +1,109 @@ ++/* ++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/of.h> ++#include <linux/clk.h> ++#include <linux/clk-provider.h> ++#include <linux/regmap.h> ++ ++#include "clk-regmap.h" ++#include "clk-hfpll.h" ++ ++static const struct hfpll_data hdata = { ++ .mode_reg = 0x00, ++ .l_reg = 0x04, ++ .m_reg = 0x08, ++ .n_reg = 0x0c, ++ .user_reg = 0x10, ++ .config_reg = 0x14, ++ .config_val = 0x430405d, ++ .status_reg = 0x1c, ++ .lock_bit = 16, ++ ++ .user_val = 0x8, ++ .user_vco_mask = 0x100000, ++ .low_vco_max_rate = 1248000000, ++ .min_rate = 537600000UL, ++ .max_rate = 2900000000UL, ++}; ++ ++static const struct of_device_id qcom_hfpll_match_table[] = { ++ { .compatible = "qcom,hfpll" }, ++ { } ++}; ++MODULE_DEVICE_TABLE(of, qcom_hfpll_match_table); ++ ++static const struct regmap_config hfpll_regmap_config = { ++ .reg_bits = 32, ++ .reg_stride = 4, ++ .val_bits = 32, ++ .max_register = 0x30, ++ .fast_io = true, ++}; ++ ++static int qcom_hfpll_probe(struct platform_device *pdev) ++{ ++ struct clk *clk; ++ struct resource *res; ++ struct device *dev = &pdev->dev; ++ void __iomem *base; ++ struct regmap *regmap; ++ struct clk_hfpll *h; ++ struct clk_init_data init = { ++ .parent_names = (const char *[]){ "xo" }, ++ .num_parents = 1, ++ .ops = &clk_ops_hfpll, ++ }; ++ ++ h = devm_kzalloc(dev, sizeof(*h), GFP_KERNEL); ++ if (!h) ++ return -ENOMEM; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ base = devm_ioremap_resource(dev, res); ++ if (IS_ERR(base)) ++ return PTR_ERR(base); ++ ++ regmap = devm_regmap_init_mmio(&pdev->dev, base, &hfpll_regmap_config); ++ if (IS_ERR(regmap)) ++ return PTR_ERR(regmap); ++ ++ if (of_property_read_string_index(dev->of_node, "clock-output-names", ++ 0, &init.name)) ++ return -ENODEV; ++ ++ h->d = &hdata; ++ h->clkr.hw.init = &init; ++ spin_lock_init(&h->lock); ++ ++ clk = devm_clk_register_regmap(&pdev->dev, &h->clkr); ++ ++ return PTR_ERR_OR_ZERO(clk); ++} ++ ++static struct platform_driver qcom_hfpll_driver = { ++ .probe = qcom_hfpll_probe, ++ .driver = { ++ .name = "qcom-hfpll", ++ .of_match_table = qcom_hfpll_match_table, ++ }, ++}; ++module_platform_driver(qcom_hfpll_driver); ++ ++MODULE_DESCRIPTION("QCOM HFPLL Clock Driver"); ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS("platform:qcom-hfpll"); diff --git a/target/linux/ipq806x/patches-3.18/139-clk-qcom-Add-IPQ806X-s-HFPLLs.patch b/target/linux/ipq806x/patches-3.18/139-clk-qcom-Add-IPQ806X-s-HFPLLs.patch new file mode 100644 index 0000000000..7fd53d1d9c --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/139-clk-qcom-Add-IPQ806X-s-HFPLLs.patch @@ -0,0 +1,127 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,08/13] clk: qcom: Add IPQ806X's HFPLLs +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063241 +Message-Id: <1426920332-9340-9-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:27 -0700 + +Describe the HFPLLs present on IPQ806X devices. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +drivers/clk/qcom/gcc-ipq806x.c | 83 ++++++++++++++++++++++++++++++++++++++++++ + 1 file changed, 83 insertions(+) + +--- a/drivers/clk/qcom/gcc-ipq806x.c ++++ b/drivers/clk/qcom/gcc-ipq806x.c +@@ -30,6 +30,7 @@ + #include "clk-pll.h" + #include "clk-rcg.h" + #include "clk-branch.h" ++#include "clk-hfpll.h" + #include "reset.h" + + static struct clk_pll pll0 = { +@@ -102,6 +103,85 @@ static struct clk_regmap pll8_vote = { + }, + }; + ++static struct hfpll_data hfpll0_data = { ++ .mode_reg = 0x3200, ++ .l_reg = 0x3208, ++ .m_reg = 0x320c, ++ .n_reg = 0x3210, ++ .config_reg = 0x3204, ++ .status_reg = 0x321c, ++ .config_val = 0x7845c665, ++ .droop_reg = 0x3214, ++ .droop_val = 0x0108c000, ++ .min_rate = 600000000UL, ++ .max_rate = 1800000000UL, ++}; ++ ++static struct clk_hfpll hfpll0 = { ++ .d = &hfpll0_data, ++ .clkr.hw.init = &(struct clk_init_data){ ++ .parent_names = (const char *[]){ "pxo" }, ++ .num_parents = 1, ++ .name = "hfpll0", ++ .ops = &clk_ops_hfpll, ++ .flags = CLK_IGNORE_UNUSED, ++ }, ++ .lock = __SPIN_LOCK_UNLOCKED(hfpll0.lock), ++}; ++ ++static struct hfpll_data hfpll1_data = { ++ .mode_reg = 0x3240, ++ .l_reg = 0x3248, ++ .m_reg = 0x324c, ++ .n_reg = 0x3250, ++ .config_reg = 0x3244, ++ .status_reg = 0x325c, ++ .config_val = 0x7845c665, ++ .droop_reg = 0x3314, ++ .droop_val = 0x0108c000, ++ .min_rate = 600000000UL, ++ .max_rate = 1800000000UL, ++}; ++ ++static struct clk_hfpll hfpll1 = { ++ .d = &hfpll1_data, ++ .clkr.hw.init = &(struct clk_init_data){ ++ .parent_names = (const char *[]){ "pxo" }, ++ .num_parents = 1, ++ .name = "hfpll1", ++ .ops = &clk_ops_hfpll, ++ .flags = CLK_IGNORE_UNUSED, ++ }, ++ .lock = __SPIN_LOCK_UNLOCKED(hfpll1.lock), ++}; ++ ++static struct hfpll_data hfpll_l2_data = { ++ .mode_reg = 0x3300, ++ .l_reg = 0x3308, ++ .m_reg = 0x330c, ++ .n_reg = 0x3310, ++ .config_reg = 0x3304, ++ .status_reg = 0x331c, ++ .config_val = 0x7845c665, ++ .droop_reg = 0x3314, ++ .droop_val = 0x0108c000, ++ .min_rate = 600000000UL, ++ .max_rate = 1800000000UL, ++}; ++ ++static struct clk_hfpll hfpll_l2 = { ++ .d = &hfpll_l2_data, ++ .clkr.hw.init = &(struct clk_init_data){ ++ .parent_names = (const char *[]){ "pxo" }, ++ .num_parents = 1, ++ .name = "hfpll_l2", ++ .ops = &clk_ops_hfpll, ++ .flags = CLK_IGNORE_UNUSED, ++ }, ++ .lock = __SPIN_LOCK_UNLOCKED(hfpll_l2.lock), ++}; ++ ++ + static struct clk_pll pll14 = { + .l_reg = 0x31c4, + .m_reg = 0x31c8, +@@ -2261,6 +2341,9 @@ static struct clk_regmap *gcc_ipq806x_cl + [USB_FS1_XCVR_SRC] = &usb_fs1_xcvr_clk_src.clkr, + [USB_FS1_XCVR_CLK] = &usb_fs1_xcvr_clk.clkr, + [USB_FS1_SYSTEM_CLK] = &usb_fs1_sys_clk.clkr, ++ [PLL9] = &hfpll0.clkr, ++ [PLL10] = &hfpll1.clkr, ++ [PLL12] = &hfpll_l2.clkr, + }; + + static const struct qcom_reset_map gcc_ipq806x_resets[] = { diff --git a/target/linux/ipq806x/patches-3.18/140-clk-qcom-Add-support-for-Krait-clocks.patch b/target/linux/ipq806x/patches-3.18/140-clk-qcom-Add-support-for-Krait-clocks.patch new file mode 100644 index 0000000000..63292e8611 --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/140-clk-qcom-Add-support-for-Krait-clocks.patch @@ -0,0 +1,271 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,09/13] clk: qcom: Add support for Krait clocks +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063251 +Message-Id: <1426920332-9340-10-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:28 -0700 + +The Krait clocks are made up of a series of muxes and a divider +that choose between a fixed rate clock and dedicated HFPLLs for +each CPU. Instead of using mmio accesses to remux parents, the +Krait implementation exposes the remux control via cp15 +registers. Support these clocks. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +drivers/clk/qcom/Kconfig | 4 ++ + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/clk-krait.c | 166 +++++++++++++++++++++++++++++++++++++++++++ + drivers/clk/qcom/clk-krait.h | 49 +++++++++++++ + 4 files changed, 220 insertions(+) + create mode 100644 drivers/clk/qcom/clk-krait.c + create mode 100644 drivers/clk/qcom/clk-krait.h + +--- a/drivers/clk/qcom/Kconfig ++++ b/drivers/clk/qcom/Kconfig +@@ -78,3 +78,7 @@ config QCOM_HFPLL + Support for the high-frequency PLLs present on Qualcomm devices. + Say Y if you want to support CPU frequency scaling on devices + such as MSM8974, APQ8084, etc. ++ ++config KRAIT_CLOCKS ++ bool ++ select KRAIT_L2_ACCESSORS +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -6,6 +6,7 @@ clk-qcom-y += clk-pll.o + clk-qcom-y += clk-rcg.o + clk-qcom-y += clk-rcg2.o + clk-qcom-y += clk-branch.o ++clk-qcom-$(CONFIG_KRAIT_CLOCKS) += clk-krait.o + clk-qcom-y += clk-hfpll.o + clk-qcom-y += reset.o + +--- /dev/null ++++ b/drivers/clk/qcom/clk-krait.c +@@ -0,0 +1,166 @@ ++/* ++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/init.h> ++#include <linux/io.h> ++#include <linux/delay.h> ++#include <linux/err.h> ++#include <linux/clk-provider.h> ++#include <linux/spinlock.h> ++ ++#include <asm/krait-l2-accessors.h> ++ ++#include "clk-krait.h" ++ ++/* Secondary and primary muxes share the same cp15 register */ ++static DEFINE_SPINLOCK(krait_clock_reg_lock); ++ ++#define LPL_SHIFT 8 ++static void __krait_mux_set_sel(struct krait_mux_clk *mux, int sel) ++{ ++ unsigned long flags; ++ u32 regval; ++ ++ spin_lock_irqsave(&krait_clock_reg_lock, flags); ++ regval = krait_get_l2_indirect_reg(mux->offset); ++ regval &= ~(mux->mask << mux->shift); ++ regval |= (sel & mux->mask) << mux->shift; ++ if (mux->lpl) { ++ regval &= ~(mux->mask << (mux->shift + LPL_SHIFT)); ++ regval |= (sel & mux->mask) << (mux->shift + LPL_SHIFT); ++ } ++ krait_set_l2_indirect_reg(mux->offset, regval); ++ spin_unlock_irqrestore(&krait_clock_reg_lock, flags); ++ ++ /* Wait for switch to complete. */ ++ mb(); ++ udelay(1); ++} ++ ++static int krait_mux_set_parent(struct clk_hw *hw, u8 index) ++{ ++ struct krait_mux_clk *mux = to_krait_mux_clk(hw); ++ u32 sel; ++ ++ sel = clk_mux_reindex(index, mux->parent_map, 0); ++ mux->en_mask = sel; ++ /* Don't touch mux if CPU is off as it won't work */ ++ if (__clk_is_enabled(hw->clk)) ++ __krait_mux_set_sel(mux, sel); ++ return 0; ++} ++ ++static u8 krait_mux_get_parent(struct clk_hw *hw) ++{ ++ struct krait_mux_clk *mux = to_krait_mux_clk(hw); ++ u32 sel; ++ ++ sel = krait_get_l2_indirect_reg(mux->offset); ++ sel >>= mux->shift; ++ sel &= mux->mask; ++ mux->en_mask = sel; ++ ++ return clk_mux_get_parent(hw, sel, mux->parent_map, 0); ++} ++ ++static struct clk_hw *krait_mux_get_safe_parent(struct clk_hw *hw) ++{ ++ int i; ++ struct krait_mux_clk *mux = to_krait_mux_clk(hw); ++ int num_parents = __clk_get_num_parents(hw->clk); ++ ++ i = mux->safe_sel; ++ for (i = 0; i < num_parents; i++) ++ if (mux->safe_sel == mux->parent_map[i]) ++ break; ++ ++ return __clk_get_hw(clk_get_parent_by_index(hw->clk, i)); ++} ++ ++static int krait_mux_enable(struct clk_hw *hw) ++{ ++ struct krait_mux_clk *mux = to_krait_mux_clk(hw); ++ ++ __krait_mux_set_sel(mux, mux->en_mask); ++ ++ return 0; ++} ++ ++static void krait_mux_disable(struct clk_hw *hw) ++{ ++ struct krait_mux_clk *mux = to_krait_mux_clk(hw); ++ ++ __krait_mux_set_sel(mux, mux->safe_sel); ++} ++ ++const struct clk_ops krait_mux_clk_ops = { ++ .enable = krait_mux_enable, ++ .disable = krait_mux_disable, ++ .set_parent = krait_mux_set_parent, ++ .get_parent = krait_mux_get_parent, ++ .determine_rate = __clk_mux_determine_rate_closest, ++ .get_safe_parent = krait_mux_get_safe_parent, ++}; ++EXPORT_SYMBOL_GPL(krait_mux_clk_ops); ++ ++/* The divider can divide by 2, 4, 6 and 8. But we only really need div-2. */ ++static long krait_div2_round_rate(struct clk_hw *hw, unsigned long rate, ++ unsigned long *parent_rate) ++{ ++ *parent_rate = __clk_round_rate(__clk_get_parent(hw->clk), rate * 2); ++ return DIV_ROUND_UP(*parent_rate, 2); ++} ++ ++static int krait_div2_set_rate(struct clk_hw *hw, unsigned long rate, ++ unsigned long parent_rate) ++{ ++ struct krait_div2_clk *d = to_krait_div2_clk(hw); ++ unsigned long flags; ++ u32 val; ++ u32 mask = BIT(d->width) - 1; ++ ++ if (d->lpl) ++ mask = mask << (d->shift + LPL_SHIFT) | mask << d->shift; ++ ++ spin_lock_irqsave(&krait_clock_reg_lock, flags); ++ val = krait_get_l2_indirect_reg(d->offset); ++ val &= ~mask; ++ krait_set_l2_indirect_reg(d->offset, val); ++ spin_unlock_irqrestore(&krait_clock_reg_lock, flags); ++ ++ return 0; ++} ++ ++static unsigned long ++krait_div2_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) ++{ ++ struct krait_div2_clk *d = to_krait_div2_clk(hw); ++ u32 mask = BIT(d->width) - 1; ++ u32 div; ++ ++ div = krait_get_l2_indirect_reg(d->offset); ++ div >>= d->shift; ++ div &= mask; ++ div = (div + 1) * 2; ++ ++ return DIV_ROUND_UP(parent_rate, div); ++} ++ ++const struct clk_ops krait_div2_clk_ops = { ++ .round_rate = krait_div2_round_rate, ++ .set_rate = krait_div2_set_rate, ++ .recalc_rate = krait_div2_recalc_rate, ++}; ++EXPORT_SYMBOL_GPL(krait_div2_clk_ops); +--- /dev/null ++++ b/drivers/clk/qcom/clk-krait.h +@@ -0,0 +1,49 @@ ++/* ++ * Copyright (c) 2013, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#ifndef __QCOM_CLK_KRAIT_H ++#define __QCOM_CLK_KRAIT_H ++ ++#include <linux/clk-provider.h> ++ ++struct krait_mux_clk { ++ unsigned int *parent_map; ++ bool has_safe_parent; ++ u8 safe_sel; ++ u32 offset; ++ u32 mask; ++ u32 shift; ++ u32 en_mask; ++ bool lpl; ++ ++ struct clk_hw hw; ++}; ++ ++#define to_krait_mux_clk(_hw) container_of(_hw, struct krait_mux_clk, hw) ++ ++extern const struct clk_ops krait_mux_clk_ops; ++ ++struct krait_div2_clk { ++ u32 offset; ++ u8 width; ++ u32 shift; ++ bool lpl; ++ ++ struct clk_hw hw; ++}; ++ ++#define to_krait_div2_clk(_hw) container_of(_hw, struct krait_div2_clk, hw) ++ ++extern const struct clk_ops krait_div2_clk_ops; ++ ++#endif diff --git a/target/linux/ipq806x/patches-3.18/141-clk-qcom-Add-KPSS-ACC-GCC-driver.patch b/target/linux/ipq806x/patches-3.18/141-clk-qcom-Add-KPSS-ACC-GCC-driver.patch new file mode 100644 index 0000000000..06b14d8b53 --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/141-clk-qcom-Add-KPSS-ACC-GCC-driver.patch @@ -0,0 +1,205 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,10/13] clk: qcom: Add KPSS ACC/GCC driver +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063201 +Message-Id: <1426920332-9340-11-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org> +Date: Fri, 20 Mar 2015 23:45:29 -0700 + +The ACC and GCC regions present in KPSSv1 contain registers to +control clocks and power to each Krait CPU and L2. For CPUfreq +purposes probe these devices and expose a mux clock that chooses +between PXO and PLL8. + +Cc: <devicetree@vger.kernel.org> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +.../devicetree/bindings/arm/msm/qcom,kpss-acc.txt | 7 ++ + .../devicetree/bindings/arm/msm/qcom,kpss-gcc.txt | 28 +++++++ + drivers/clk/qcom/Kconfig | 8 ++ + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/kpss-xcc.c | 95 ++++++++++++++++++++++ + 5 files changed, 139 insertions(+) + create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt + create mode 100644 drivers/clk/qcom/kpss-xcc.c + +--- a/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt ++++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt +@@ -21,10 +21,17 @@ PROPERTIES + the register region. An optional second element specifies + the base address and size of the alias register region. + ++- clock-output-names: ++ Usage: optional ++ Value type: <string> ++ Definition: Name of the output clock. Typically acpuX_aux where X is a ++ CPU number starting at 0. ++ + Example: + + clock-controller@2088000 { + compatible = "qcom,kpss-acc-v2"; + reg = <0x02088000 0x1000>, + <0x02008000 0x1000>; ++ clock-output-names = "acpu0_aux"; + }; +--- /dev/null ++++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt +@@ -0,0 +1,28 @@ ++Krait Processor Sub-system (KPSS) Global Clock Controller (GCC) ++ ++PROPERTIES ++ ++- compatible: ++ Usage: required ++ Value type: <string> ++ Definition: should be one of: ++ "qcom,kpss-gcc" ++ ++- reg: ++ Usage: required ++ Value type: <prop-encoded-array> ++ Definition: base address and size of the register region ++ ++- clock-output-names: ++ Usage: required ++ Value type: <string> ++ Definition: Name of the output clock. Typically acpu_l2_aux indicating ++ an L2 cache auxiliary clock. ++ ++Example: ++ ++ l2cc: clock-controller@2011000 { ++ compatible = "qcom,kpss-gcc"; ++ reg = <0x2011000 0x1000>; ++ clock-output-names = "acpu_l2_aux"; ++ }; +--- a/drivers/clk/qcom/Kconfig ++++ b/drivers/clk/qcom/Kconfig +@@ -79,6 +79,14 @@ config QCOM_HFPLL + Say Y if you want to support CPU frequency scaling on devices + such as MSM8974, APQ8084, etc. + ++config KPSS_XCC ++ tristate "KPSS Clock Controller" ++ depends on COMMON_CLK_QCOM ++ help ++ Support for the Krait ACC and GCC clock controllers. Say Y ++ if you want to support CPU frequency scaling on devices such ++ as MSM8960, APQ8064, etc. ++ + config KRAIT_CLOCKS + bool + select KRAIT_L2_ACCESSORS +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -18,4 +18,5 @@ obj-$(CONFIG_MSM_GCC_8960) += gcc-msm896 + obj-$(CONFIG_MSM_GCC_8974) += gcc-msm8974.o + obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o + obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o ++obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o + obj-$(CONFIG_QCOM_HFPLL) += hfpll.o +--- /dev/null ++++ b/drivers/clk/qcom/kpss-xcc.c +@@ -0,0 +1,95 @@ ++/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/err.h> ++#include <linux/io.h> ++#include <linux/of.h> ++#include <linux/of_device.h> ++#include <linux/clk.h> ++#include <linux/clk-provider.h> ++ ++static const char *aux_parents[] = { ++ "pll8_vote", ++ "pxo", ++}; ++ ++static unsigned int aux_parent_map[] = { ++ 3, ++ 0, ++}; ++ ++static const struct of_device_id kpss_xcc_match_table[] = { ++ { .compatible = "qcom,kpss-acc-v1", .data = (void *)1UL }, ++ { .compatible = "qcom,kpss-gcc" }, ++ {} ++}; ++MODULE_DEVICE_TABLE(of, kpss_xcc_match_table); ++ ++static int kpss_xcc_driver_probe(struct platform_device *pdev) ++{ ++ const struct of_device_id *id; ++ struct clk *clk; ++ struct resource *res; ++ void __iomem *base; ++ const char *name; ++ ++ id = of_match_device(kpss_xcc_match_table, &pdev->dev); ++ if (!id) ++ return -ENODEV; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ base = devm_ioremap_resource(&pdev->dev, res); ++ if (IS_ERR(base)) ++ return PTR_ERR(base); ++ ++ if (id->data) { ++ if (of_property_read_string_index(pdev->dev.of_node, ++ "clock-output-names", 0, &name)) ++ return -ENODEV; ++ base += 0x14; ++ } else { ++ name = "acpu_l2_aux"; ++ base += 0x28; ++ } ++ ++ clk = clk_register_mux_table(&pdev->dev, name, aux_parents, ++ ARRAY_SIZE(aux_parents), 0, base, 0, 0x3, ++ 0, aux_parent_map, NULL); ++ ++ platform_set_drvdata(pdev, clk); ++ ++ return PTR_ERR_OR_ZERO(clk); ++} ++ ++static int kpss_xcc_driver_remove(struct platform_device *pdev) ++{ ++ clk_unregister_mux(platform_get_drvdata(pdev)); ++ return 0; ++} ++ ++static struct platform_driver kpss_xcc_driver = { ++ .probe = kpss_xcc_driver_probe, ++ .remove = kpss_xcc_driver_remove, ++ .driver = { ++ .name = "kpss-xcc", ++ .of_match_table = kpss_xcc_match_table, ++ }, ++}; ++module_platform_driver(kpss_xcc_driver); ++ ++MODULE_DESCRIPTION("Krait Processor Sub System (KPSS) Clock Driver"); ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS("platform:kpss-xcc"); diff --git a/target/linux/ipq806x/patches-3.18/142-clk-qcom-Add-Krait-clock-controller-driver.patch b/target/linux/ipq806x/patches-3.18/142-clk-qcom-Add-Krait-clock-controller-driver.patch new file mode 100644 index 0000000000..98a09ac08e --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/142-clk-qcom-Add-Krait-clock-controller-driver.patch @@ -0,0 +1,435 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,11/13] clk: qcom: Add Krait clock controller driver +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063121 +Message-Id: <1426920332-9340-12-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org> +Date: Fri, 20 Mar 2015 23:45:30 -0700 + +The Krait CPU clocks are made up of a primary mux and secondary +mux for each CPU and the L2, controlled via cp15 accessors. For +Kraits within KPSSv1 each secondary mux accepts a different aux +source, but on KPSSv2 each secondary mux accepts the same aux +source. + +Cc: <devicetree@vger.kernel.org> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +.../devicetree/bindings/clock/qcom,krait-cc.txt | 22 ++ + drivers/clk/qcom/Kconfig | 8 + + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/krait-cc.c | 352 +++++++++++++++++++++ + 4 files changed, 383 insertions(+) + create mode 100644 Documentation/devicetree/bindings/clock/qcom,krait-cc.txt + create mode 100644 drivers/clk/qcom/krait-cc.c + +--- /dev/null ++++ b/Documentation/devicetree/bindings/clock/qcom,krait-cc.txt +@@ -0,0 +1,22 @@ ++Krait Clock Controller ++ ++PROPERTIES ++ ++- compatible: ++ Usage: required ++ Value type: <string> ++ Definition: must be one of: ++ "qcom,krait-cc-v1" ++ "qcom,krait-cc-v2" ++ ++- #clock-cells: ++ Usage: required ++ Value type: <u32> ++ Definition: must be 1 ++ ++Example: ++ ++ kraitcc: clock-controller { ++ compatible = "qcom,krait-cc-v1"; ++ #clock-cells = <1>; ++ }; +--- a/drivers/clk/qcom/Kconfig ++++ b/drivers/clk/qcom/Kconfig +@@ -87,6 +87,14 @@ config KPSS_XCC + if you want to support CPU frequency scaling on devices such + as MSM8960, APQ8064, etc. + ++config KRAITCC ++ tristate "Krait Clock Controller" ++ depends on COMMON_CLK_QCOM && ARM ++ select KRAIT_CLOCKS ++ help ++ Support for the Krait CPU clocks on Qualcomm devices. ++ Say Y if you want to support CPU frequency scaling. ++ + config KRAIT_CLOCKS + bool + select KRAIT_L2_ACCESSORS +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -20,3 +20,4 @@ obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8 + obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o + obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o + obj-$(CONFIG_QCOM_HFPLL) += hfpll.o ++obj-$(CONFIG_KRAITCC) += krait-cc.o +--- /dev/null ++++ b/drivers/clk/qcom/krait-cc.c +@@ -0,0 +1,352 @@ ++/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/err.h> ++#include <linux/io.h> ++#include <linux/of.h> ++#include <linux/of_device.h> ++#include <linux/clk.h> ++#include <linux/clk-provider.h> ++#include <linux/slab.h> ++ ++#include "clk-krait.h" ++ ++static unsigned int sec_mux_map[] = { ++ 2, ++ 0, ++}; ++ ++static unsigned int pri_mux_map[] = { ++ 1, ++ 2, ++ 0, ++}; ++ ++static int ++krait_add_div(struct device *dev, int id, const char *s, unsigned offset) ++{ ++ struct krait_div2_clk *div; ++ struct clk_init_data init = { ++ .num_parents = 1, ++ .ops = &krait_div2_clk_ops, ++ .flags = CLK_SET_RATE_PARENT, ++ }; ++ const char *p_names[1]; ++ struct clk *clk; ++ ++ div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL); ++ if (!div) ++ return -ENOMEM; ++ ++ div->width = 2; ++ div->shift = 6; ++ div->lpl = id >= 0; ++ div->offset = offset; ++ div->hw.init = &init; ++ ++ init.name = kasprintf(GFP_KERNEL, "hfpll%s_div", s); ++ if (!init.name) ++ return -ENOMEM; ++ ++ init.parent_names = p_names; ++ p_names[0] = kasprintf(GFP_KERNEL, "hfpll%s", s); ++ if (!p_names[0]) { ++ kfree(init.name); ++ return -ENOMEM; ++ } ++ ++ clk = devm_clk_register(dev, &div->hw); ++ kfree(p_names[0]); ++ kfree(init.name); ++ ++ return PTR_ERR_OR_ZERO(clk); ++} ++ ++static int ++krait_add_sec_mux(struct device *dev, int id, const char *s, unsigned offset, ++ bool unique_aux) ++{ ++ struct krait_mux_clk *mux; ++ static const char *sec_mux_list[] = { ++ "acpu_aux", ++ "qsb", ++ }; ++ struct clk_init_data init = { ++ .parent_names = sec_mux_list, ++ .num_parents = ARRAY_SIZE(sec_mux_list), ++ .ops = &krait_mux_clk_ops, ++ .flags = CLK_SET_RATE_PARENT, ++ }; ++ struct clk *clk; ++ ++ mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL); ++ if (!mux) ++ return -ENOMEM; ++ ++ mux->offset = offset; ++ mux->lpl = id >= 0; ++ mux->has_safe_parent = true; ++ mux->safe_sel = 2; ++ mux->mask = 0x3; ++ mux->shift = 2; ++ mux->parent_map = sec_mux_map; ++ mux->hw.init = &init; ++ ++ init.name = kasprintf(GFP_KERNEL, "krait%s_sec_mux", s); ++ if (!init.name) ++ return -ENOMEM; ++ ++ if (unique_aux) { ++ sec_mux_list[0] = kasprintf(GFP_KERNEL, "acpu%s_aux", s); ++ if (!sec_mux_list[0]) { ++ clk = ERR_PTR(-ENOMEM); ++ goto err_aux; ++ } ++ } ++ ++ clk = devm_clk_register(dev, &mux->hw); ++ ++ if (unique_aux) ++ kfree(sec_mux_list[0]); ++err_aux: ++ kfree(init.name); ++ return PTR_ERR_OR_ZERO(clk); ++} ++ ++static struct clk * ++krait_add_pri_mux(struct device *dev, int id, const char *s, unsigned offset) ++{ ++ struct krait_mux_clk *mux; ++ const char *p_names[3]; ++ struct clk_init_data init = { ++ .parent_names = p_names, ++ .num_parents = ARRAY_SIZE(p_names), ++ .ops = &krait_mux_clk_ops, ++ .flags = CLK_SET_RATE_PARENT, ++ }; ++ struct clk *clk; ++ ++ mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL); ++ if (!mux) ++ return ERR_PTR(-ENOMEM); ++ ++ mux->has_safe_parent = true; ++ mux->safe_sel = 0; ++ mux->mask = 0x3; ++ mux->shift = 0; ++ mux->offset = offset; ++ mux->lpl = id >= 0; ++ mux->parent_map = pri_mux_map; ++ mux->hw.init = &init; ++ ++ init.name = kasprintf(GFP_KERNEL, "krait%s_pri_mux", s); ++ if (!init.name) ++ return ERR_PTR(-ENOMEM); ++ ++ p_names[0] = kasprintf(GFP_KERNEL, "hfpll%s", s); ++ if (!p_names[0]) { ++ clk = ERR_PTR(-ENOMEM); ++ goto err_p0; ++ } ++ ++ p_names[1] = kasprintf(GFP_KERNEL, "hfpll%s_div", s); ++ if (!p_names[1]) { ++ clk = ERR_PTR(-ENOMEM); ++ goto err_p1; ++ } ++ ++ p_names[2] = kasprintf(GFP_KERNEL, "krait%s_sec_mux", s); ++ if (!p_names[2]) { ++ clk = ERR_PTR(-ENOMEM); ++ goto err_p2; ++ } ++ ++ clk = devm_clk_register(dev, &mux->hw); ++ ++ kfree(p_names[2]); ++err_p2: ++ kfree(p_names[1]); ++err_p1: ++ kfree(p_names[0]); ++err_p0: ++ kfree(init.name); ++ return clk; ++} ++ ++/* id < 0 for L2, otherwise id == physical CPU number */ ++static struct clk *krait_add_clks(struct device *dev, int id, bool unique_aux) ++{ ++ int ret; ++ unsigned offset; ++ void *p = NULL; ++ const char *s; ++ struct clk *clk; ++ ++ if (id >= 0) { ++ offset = 0x4501 + (0x1000 * id); ++ s = p = kasprintf(GFP_KERNEL, "%d", id); ++ if (!s) ++ return ERR_PTR(-ENOMEM); ++ } else { ++ offset = 0x500; ++ s = "_l2"; ++ } ++ ++ ret = krait_add_div(dev, id, s, offset); ++ if (ret) { ++ clk = ERR_PTR(ret); ++ goto err; ++ } ++ ++ ret = krait_add_sec_mux(dev, id, s, offset, unique_aux); ++ if (ret) { ++ clk = ERR_PTR(ret); ++ goto err; ++ } ++ ++ clk = krait_add_pri_mux(dev, id, s, offset); ++err: ++ kfree(p); ++ return clk; ++} ++ ++static struct clk *krait_of_get(struct of_phandle_args *clkspec, void *data) ++{ ++ unsigned int idx = clkspec->args[0]; ++ struct clk **clks = data; ++ ++ if (idx >= 5) { ++ pr_err("%s: invalid clock index %d\n", __func__, idx); ++ return ERR_PTR(-EINVAL); ++ } ++ ++ return clks[idx] ? : ERR_PTR(-ENODEV); ++} ++ ++static const struct of_device_id krait_cc_match_table[] = { ++ { .compatible = "qcom,krait-cc-v1", (void *)1UL }, ++ { .compatible = "qcom,krait-cc-v2" }, ++ {} ++}; ++MODULE_DEVICE_TABLE(of, krait_cc_match_table); ++ ++static int krait_cc_probe(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ const struct of_device_id *id; ++ unsigned long cur_rate, aux_rate; ++ int cpu; ++ struct clk *clk; ++ struct clk **clks; ++ struct clk *l2_pri_mux_clk; ++ ++ id = of_match_device(krait_cc_match_table, dev); ++ if (!id) ++ return -ENODEV; ++ ++ /* Rate is 1 because 0 causes problems for __clk_mux_determine_rate */ ++ clk = clk_register_fixed_rate(dev, "qsb", NULL, CLK_IS_ROOT, 1); ++ if (IS_ERR(clk)) ++ return PTR_ERR(clk); ++ ++ if (!id->data) { ++ clk = clk_register_fixed_factor(dev, "acpu_aux", ++ "gpll0_vote", 0, 1, 2); ++ if (IS_ERR(clk)) ++ return PTR_ERR(clk); ++ } ++ ++ /* Krait configurations have at most 4 CPUs and one L2 */ ++ clks = devm_kcalloc(dev, 5, sizeof(*clks), GFP_KERNEL); ++ if (!clks) ++ return -ENOMEM; ++ ++ for_each_possible_cpu(cpu) { ++ clk = krait_add_clks(dev, cpu, id->data); ++ if (IS_ERR(clk)) ++ return PTR_ERR(clk); ++ clks[cpu] = clk; ++ } ++ ++ l2_pri_mux_clk = krait_add_clks(dev, -1, id->data); ++ if (IS_ERR(l2_pri_mux_clk)) ++ return PTR_ERR(l2_pri_mux_clk); ++ clks[4] = l2_pri_mux_clk; ++ ++ /* ++ * We don't want the CPU or L2 clocks to be turned off at late init ++ * if CPUFREQ or HOTPLUG configs are disabled. So, bump up the ++ * refcount of these clocks. Any cpufreq/hotplug manager can assume ++ * that the clocks have already been prepared and enabled by the time ++ * they take over. ++ */ ++ for_each_online_cpu(cpu) { ++ clk_prepare_enable(l2_pri_mux_clk); ++ WARN(clk_prepare_enable(clks[cpu]), ++ "Unable to turn on CPU%d clock", cpu); ++ } ++ ++ /* ++ * Force reinit of HFPLLs and muxes to overwrite any potential ++ * incorrect configuration of HFPLLs and muxes by the bootloader. ++ * While at it, also make sure the cores are running at known rates ++ * and print the current rate. ++ * ++ * The clocks are set to aux clock rate first to make sure the ++ * secondary mux is not sourcing off of QSB. The rate is then set to ++ * two different rates to force a HFPLL reinit under all ++ * circumstances. ++ */ ++ cur_rate = clk_get_rate(l2_pri_mux_clk); ++ aux_rate = 384000000; ++ if (cur_rate == 1) { ++ pr_info("L2 @ QSB rate. Forcing new rate.\n"); ++ cur_rate = aux_rate; ++ } ++ clk_set_rate(l2_pri_mux_clk, aux_rate); ++ clk_set_rate(l2_pri_mux_clk, 2); ++ clk_set_rate(l2_pri_mux_clk, cur_rate); ++ pr_info("L2 @ %lu KHz\n", clk_get_rate(l2_pri_mux_clk) / 1000); ++ for_each_possible_cpu(cpu) { ++ clk = clks[cpu]; ++ cur_rate = clk_get_rate(clk); ++ if (cur_rate == 1) { ++ pr_info("CPU%d @ QSB rate. Forcing new rate.\n", cpu); ++ cur_rate = aux_rate; ++ } ++ clk_set_rate(clk, aux_rate); ++ clk_set_rate(clk, 2); ++ clk_set_rate(clk, cur_rate); ++ pr_info("CPU%d @ %lu KHz\n", cpu, clk_get_rate(clk) / 1000); ++ } ++ ++ of_clk_add_provider(dev->of_node, krait_of_get, clks); ++ ++ return 0; ++} ++ ++static struct platform_driver krait_cc_driver = { ++ .probe = krait_cc_probe, ++ .driver = { ++ .name = "krait-cc", ++ .of_match_table = krait_cc_match_table, ++ }, ++}; ++module_platform_driver(krait_cc_driver); ++ ++MODULE_DESCRIPTION("Krait CPU Clock Driver"); ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS("platform:krait-cc"); diff --git a/target/linux/ipq806x/patches-3.18/143-cpufreq-Add-module-to-register-cpufreq-on-Krait-CPUs.patch b/target/linux/ipq806x/patches-3.18/143-cpufreq-Add-module-to-register-cpufreq-on-Krait-CPUs.patch new file mode 100644 index 0000000000..c3ca9b5f70 --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/143-cpufreq-Add-module-to-register-cpufreq-on-Krait-CPUs.patch @@ -0,0 +1,304 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,12/13] cpufreq: Add module to register cpufreq on Krait CPUs +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063191 +Message-Id: <1426920332-9340-13-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org> +Date: Fri, 20 Mar 2015 23:45:31 -0700 + +Register a cpufreq-generic device whenever we detect that a +"qcom,krait" compatible CPU is present in DT. + +Cc: <devicetree@vger.kernel.org> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +.../devicetree/bindings/arm/msm/qcom,pvs.txt | 38 ++++ + drivers/cpufreq/Kconfig.arm | 9 + + drivers/cpufreq/Makefile | 1 + + drivers/cpufreq/qcom-cpufreq.c | 204 +++++++++++++++++++++ + 4 files changed, 252 insertions(+) + create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,pvs.txt + create mode 100644 drivers/cpufreq/qcom-cpufreq.c + +--- /dev/null ++++ b/Documentation/devicetree/bindings/arm/msm/qcom,pvs.txt +@@ -0,0 +1,38 @@ ++Qualcomm Process Voltage Scaling Tables ++ ++The node name is required to be "qcom,pvs". There shall only be one ++such node present in the root of the tree. ++ ++PROPERTIES ++ ++- qcom,pvs-format-a or qcom,pvs-format-b: ++ Usage: required ++ Value type: <empty> ++ Definition: Indicates the format of qcom,speedX-pvsY-bin-vZ properties. ++ If qcom,pvs-format-a is used the table is two columns ++ (frequency and voltage in that order). If qcom,pvs-format-b is used the table is three columns (frequency, voltage, ++ and current in that order). ++ ++- qcom,speedX-pvsY-bin-vZ: ++ Usage: required ++ Value type: <prop-encoded-array> ++ Definition: The PVS table corresponding to the speed bin X, pvs bin Y, ++ and version Z. ++Example: ++ ++ qcom,pvs { ++ qcom,pvs-format-a; ++ qcom,speed0-pvs0-bin-v0 = ++ < 384000000 950000 >, ++ < 486000000 975000 >, ++ < 594000000 1000000 >, ++ < 702000000 1025000 >, ++ < 810000000 1075000 >, ++ < 918000000 1100000 >, ++ < 1026000000 1125000 >, ++ < 1134000000 1175000 >, ++ < 1242000000 1200000 >, ++ < 1350000000 1225000 >, ++ < 1458000000 1237500 >, ++ < 1512000000 1250000 >; ++ }; +--- a/drivers/cpufreq/Kconfig.arm ++++ b/drivers/cpufreq/Kconfig.arm +@@ -129,6 +129,15 @@ config ARM_OMAP2PLUS_CPUFREQ + depends on ARCH_OMAP2PLUS + default ARCH_OMAP2PLUS + ++config ARM_QCOM_CPUFREQ ++ tristate "Qualcomm based" ++ depends on ARCH_QCOM ++ select PM_OPP ++ help ++ This adds the CPUFreq driver for Qualcomm SoC based boards. ++ ++ If in doubt, say N. ++ + config ARM_S3C_CPUFREQ + bool + help +--- a/drivers/cpufreq/Makefile ++++ b/drivers/cpufreq/Makefile +@@ -64,6 +64,7 @@ obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ) += o + obj-$(CONFIG_PXA25x) += pxa2xx-cpufreq.o + obj-$(CONFIG_PXA27x) += pxa2xx-cpufreq.o + obj-$(CONFIG_PXA3xx) += pxa3xx-cpufreq.o ++obj-$(CONFIG_ARM_QCOM_CPUFREQ) += qcom-cpufreq.o + obj-$(CONFIG_ARM_S3C24XX_CPUFREQ) += s3c24xx-cpufreq.o + obj-$(CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS) += s3c24xx-cpufreq-debugfs.o + obj-$(CONFIG_ARM_S3C2410_CPUFREQ) += s3c2410-cpufreq.o +--- /dev/null ++++ b/drivers/cpufreq/qcom-cpufreq.c +@@ -0,0 +1,204 @@ ++/* Copyright (c) 2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/cpu.h> ++#include <linux/err.h> ++#include <linux/init.h> ++#include <linux/io.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/platform_device.h> ++#include <linux/pm_opp.h> ++#include <linux/slab.h> ++#include <linux/cpufreq-dt.h> ++ ++static void __init get_krait_bin_format_a(int *speed, int *pvs, int *pvs_ver) ++{ ++ void __iomem *base; ++ u32 pte_efuse; ++ ++ *speed = *pvs = *pvs_ver = 0; ++ ++ base = ioremap(0x007000c0, 4); ++ if (!base) { ++ pr_warn("Unable to read efuse data. Defaulting to 0!\n"); ++ return; ++ } ++ ++ pte_efuse = readl_relaxed(base); ++ iounmap(base); ++ ++ *speed = pte_efuse & 0xf; ++ if (*speed == 0xf) ++ *speed = (pte_efuse >> 4) & 0xf; ++ ++ if (*speed == 0xf) { ++ *speed = 0; ++ pr_warn("Speed bin: Defaulting to %d\n", *speed); ++ } else { ++ pr_info("Speed bin: %d\n", *speed); ++ } ++ ++ *pvs = (pte_efuse >> 10) & 0x7; ++ if (*pvs == 0x7) ++ *pvs = (pte_efuse >> 13) & 0x7; ++ ++ if (*pvs == 0x7) { ++ *pvs = 0; ++ pr_warn("PVS bin: Defaulting to %d\n", *pvs); ++ } else { ++ pr_info("PVS bin: %d\n", *pvs); ++ } ++} ++ ++static void __init get_krait_bin_format_b(int *speed, int *pvs, int *pvs_ver) ++{ ++ u32 pte_efuse, redundant_sel; ++ void __iomem *base; ++ ++ *speed = 0; ++ *pvs = 0; ++ *pvs_ver = 0; ++ ++ base = ioremap(0xfc4b80b0, 8); ++ if (!base) { ++ pr_warn("Unable to read efuse data. Defaulting to 0!\n"); ++ return; ++ } ++ ++ pte_efuse = readl_relaxed(base); ++ redundant_sel = (pte_efuse >> 24) & 0x7; ++ *speed = pte_efuse & 0x7; ++ /* 4 bits of PVS are in efuse register bits 31, 8-6. */ ++ *pvs = ((pte_efuse >> 28) & 0x8) | ((pte_efuse >> 6) & 0x7); ++ *pvs_ver = (pte_efuse >> 4) & 0x3; ++ ++ switch (redundant_sel) { ++ case 1: ++ *speed = (pte_efuse >> 27) & 0xf; ++ break; ++ case 2: ++ *pvs = (pte_efuse >> 27) & 0xf; ++ break; ++ } ++ ++ /* Check SPEED_BIN_BLOW_STATUS */ ++ if (pte_efuse & BIT(3)) { ++ pr_info("Speed bin: %d\n", *speed); ++ } else { ++ pr_warn("Speed bin not set. Defaulting to 0!\n"); ++ *speed = 0; ++ } ++ ++ /* Check PVS_BLOW_STATUS */ ++ pte_efuse = readl_relaxed(base + 0x4) & BIT(21); ++ if (pte_efuse) { ++ pr_info("PVS bin: %d\n", *pvs); ++ } else { ++ pr_warn("PVS bin not set. Defaulting to 0!\n"); ++ *pvs = 0; ++ } ++ ++ pr_info("PVS version: %d\n", *pvs_ver); ++ iounmap(base); ++} ++ ++static int __init qcom_cpufreq_populate_opps(void) ++{ ++ int len, rows, cols, i, k, speed, pvs, pvs_ver; ++ char table_name[] = "qcom,speedXX-pvsXX-bin-vXX"; ++ struct device_node *np; ++ struct device *dev; ++ int cpu = 0; ++ ++ np = of_find_node_by_name(NULL, "qcom,pvs"); ++ if (!np) ++ return -ENODEV; ++ ++ if (of_property_read_bool(np, "qcom,pvs-format-a")) { ++ get_krait_bin_format_a(&speed, &pvs, &pvs_ver); ++ cols = 2; ++ } else if (of_property_read_bool(np, "qcom,pvs-format-b")) { ++ get_krait_bin_format_b(&speed, &pvs, &pvs_ver); ++ cols = 3; ++ } else { ++ return -ENODEV; ++ } ++ ++ snprintf(table_name, sizeof(table_name), ++ "qcom,speed%d-pvs%d-bin-v%d", speed, pvs, pvs_ver); ++ ++ if (!of_find_property(np, table_name, &len)) ++ return -EINVAL; ++ ++ len /= sizeof(u32); ++ if (len % cols || len == 0) ++ return -EINVAL; ++ ++ rows = len / cols; ++ ++ for (i = 0, k = 0; i < rows; i++) { ++ u32 freq, volt; ++ ++ of_property_read_u32_index(np, table_name, k++, &freq); ++ of_property_read_u32_index(np, table_name, k++, &volt); ++ while (k % cols) ++ k++; /* Skip uA entries if present */ ++ for (cpu = 0; cpu < num_possible_cpus(); cpu++) { ++ dev = get_cpu_device(cpu); ++ if (!dev) ++ return -ENODEV; ++ if (dev_pm_opp_add(dev, freq, volt)) ++ pr_warn("failed to add OPP %u\n", freq); ++ } ++ } ++ ++ return 0; ++} ++ ++static int __init qcom_cpufreq_driver_init(void) ++{ ++ struct cpufreq_dt_platform_data pdata = { .independent_clocks = true }; ++ struct platform_device_info devinfo = { ++ .name = "cpufreq-dt", ++ .data = &pdata, ++ .size_data = sizeof(pdata), ++ }; ++ struct device *cpu_dev; ++ struct device_node *np; ++ int ret; ++ ++ cpu_dev = get_cpu_device(0); ++ if (!cpu_dev) ++ return -ENODEV; ++ ++ np = of_node_get(cpu_dev->of_node); ++ if (!np) ++ return -ENOENT; ++ ++ if (!of_device_is_compatible(np, "qcom,krait")) { ++ of_node_put(np); ++ return -ENODEV; ++ } ++ of_node_put(np); ++ ++ ret = qcom_cpufreq_populate_opps(); ++ if (ret) ++ return ret; ++ ++ return PTR_ERR_OR_ZERO(platform_device_register_full(&devinfo)); ++} ++module_init(qcom_cpufreq_driver_init); ++ ++MODULE_DESCRIPTION("Qualcomm CPUfreq driver"); ++MODULE_LICENSE("GPL v2"); diff --git a/target/linux/ipq806x/patches-3.18/144-ARM-dts-qcom-Add-necessary-DT-data-for-Krait-cpufreq.patch b/target/linux/ipq806x/patches-3.18/144-ARM-dts-qcom-Add-necessary-DT-data-for-Krait-cpufreq.patch new file mode 100644 index 0000000000..9f8d8cb7e8 --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/144-ARM-dts-qcom-Add-necessary-DT-data-for-Krait-cpufreq.patch @@ -0,0 +1,100 @@ +--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi ++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi +@@ -23,6 +23,11 @@ + next-level-cache = <&L2>; + qcom,acc = <&acc0>; + qcom,saw = <&saw0>; ++ clocks = <&kraitcc 0>; ++ clock-names = "cpu"; ++ clock-latency = <100000>; ++ core-supply = <&smb208_s2a>; ++ voltage-tolerance = <5>; + }; + + cpu@1 { +@@ -33,11 +38,24 @@ + next-level-cache = <&L2>; + qcom,acc = <&acc1>; + qcom,saw = <&saw1>; ++ clocks = <&kraitcc 1>; ++ clock-names = "cpu"; ++ clock-latency = <100000>; ++ core-supply = <&smb208_s2b>; + }; + + L2: l2-cache { + compatible = "cache"; + cache-level = <2>; ++ clocks = <&kraitcc 4>; ++ clock-names = "cache"; ++ cache-points-kHz = < ++ /* kHz uV CPU kHz */ ++ 1200000 1150000 1200000 ++ 1000000 1100000 600000 ++ 384000 1100000 384000 ++ >; ++ vdd_dig-supply = <&smb208_s1a>; + }; + }; + +@@ -70,6 +88,46 @@ + }; + }; + ++ kraitcc: clock-controller { ++ compatible = "qcom,krait-cc-v1"; ++ #clock-cells = <1>; ++ }; ++ ++ qcom,pvs { ++ qcom,pvs-format-a; ++ qcom,speed0-pvs0-bin-v0 = ++ < 1400000000 1250000 >, ++ < 1200000000 1200000 >, ++ < 1000000000 1150000 >, ++ < 800000000 1100000 >, ++ < 600000000 1050000 >, ++ < 384000000 1000000 >; ++ ++ qcom,speed0-pvs1-bin-v0 = ++ < 1400000000 1175000 >, ++ < 1200000000 1125000 >, ++ < 1000000000 1075000 >, ++ < 800000000 1025000 >, ++ < 600000000 975000 >, ++ < 384000000 925000 >; ++ ++ qcom,speed0-pvs2-bin-v0 = ++ < 1400000000 1125000 >, ++ < 1200000000 1075000 >, ++ < 1000000000 1025000 >, ++ < 800000000 995000 >, ++ < 600000000 925000 >, ++ < 384000000 875000 >; ++ ++ qcom,speed0-pvs3-bin-v0 = ++ < 1400000000 1050000 >, ++ < 1200000000 1000000 >, ++ < 1000000000 950000 >, ++ < 800000000 900000 >, ++ < 600000000 850000 >, ++ < 384000000 800000 >; ++ }; ++ + soc: soc { + #address-cells = <1>; + #size-cells = <1>; +@@ -170,11 +228,13 @@ + acc0: clock-controller@2088000 { + compatible = "qcom,kpss-acc-v1"; + reg = <0x02088000 0x1000>, <0x02008000 0x1000>; ++ clock-output-names = "acpu0_aux"; + }; + + acc1: clock-controller@2098000 { + compatible = "qcom,kpss-acc-v1"; + reg = <0x02098000 0x1000>, <0x02008000 0x1000>; ++ clock-output-names = "acpu1_aux"; + }; + + l2cc: clock-controller@2011000 { diff --git a/target/linux/ipq806x/patches-3.18/145-cpufreq-Add-a-cpufreq-krait-based-on-cpufre.patch b/target/linux/ipq806x/patches-3.18/145-cpufreq-Add-a-cpufreq-krait-based-on-cpufre.patch new file mode 100644 index 0000000000..15cabf3eb9 --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/145-cpufreq-Add-a-cpufreq-krait-based-on-cpufre.patch @@ -0,0 +1,461 @@ +From dd77db4143290689d3a5e1ec61627233d0711b66 Mon Sep 17 00:00:00 2001 +From: Stephen Boyd <sboyd@codeaurora.org> +Date: Fri, 30 May 2014 16:36:11 -0700 +Subject: [PATCH] FROMLIST: cpufreq: Add a cpufreq-krait based on cpufreq-cpu0 + +Krait processors have individual clocks for each CPU that can +scale independently from one another. cpufreq-cpu0 is fairly +close to this, but assumes that there is only one clock for all +CPUs. Add a driver to support the Krait configuration. + +TODO: Merge into cpufreq-cpu0? Or make generic? + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- + drivers/cpufreq/Kconfig | 13 +++ + drivers/cpufreq/Makefile | 1 + + drivers/cpufreq/cpufreq-krait.c | 190 ++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 204 insertions(+) + create mode 100644 drivers/cpufreq/cpufreq-krait.c + +--- a/drivers/cpufreq/Kconfig ++++ b/drivers/cpufreq/Kconfig +@@ -196,6 +196,19 @@ config CPUFREQ_DT + + If in doubt, say N. + ++config GENERIC_CPUFREQ_KRAIT ++ tristate "Krait cpufreq driver" ++ depends on HAVE_CLK && OF ++ # if CPU_THERMAL is on and THERMAL=m, CPU0 cannot be =y: ++ depends on !CPU_THERMAL || THERMAL ++ select PM_OPP ++ help ++ This adds a generic cpufreq driver for CPU0 frequency management. ++ It supports both uniprocessor (UP) and symmetric multiprocessor (SMP) ++ systems which share clock and voltage across all CPUs. ++ ++ If in doubt, say N. ++ + menu "x86 CPU frequency scaling drivers" + depends on X86 + source "drivers/cpufreq/Kconfig.x86" +--- a/drivers/cpufreq/Makefile ++++ b/drivers/cpufreq/Makefile +@@ -14,6 +14,7 @@ obj-$(CONFIG_CPU_FREQ_GOV_CONSERVATIVE) + obj-$(CONFIG_CPU_FREQ_GOV_COMMON) += cpufreq_governor.o + + obj-$(CONFIG_CPUFREQ_DT) += cpufreq-dt.o ++obj-$(CONFIG_GENERIC_CPUFREQ_KRAIT) += cpufreq-krait.o + + ################################################################################## + # x86 drivers. +--- /dev/null ++++ b/drivers/cpufreq/cpufreq-krait.c +@@ -0,0 +1,390 @@ ++/* ++ * Copyright (C) 2012 Freescale Semiconductor, Inc. ++ * Copyright (c) 2014, The Linux Foundation. All rights reserved. ++ * ++ * The OPP code in function krait_set_target() is reused from ++ * drivers/cpufreq/omap-cpufreq.c ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#include <linux/clk.h> ++#include <linux/cpu.h> ++#include <linux/cpu_cooling.h> ++#include <linux/cpufreq.h> ++#include <linux/cpumask.h> ++#include <linux/err.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/pm_opp.h> ++#include <linux/platform_device.h> ++#include <linux/regulator/consumer.h> ++#include <linux/slab.h> ++#include <linux/thermal.h> ++ ++static unsigned int transition_latency; ++static unsigned int voltage_tolerance; /* in percentage */ ++ ++static struct device *cpu_dev; ++static DEFINE_PER_CPU(struct clk *, krait_cpu_clks); ++static DEFINE_PER_CPU(struct regulator *, krait_supply_core); ++static struct cpufreq_frequency_table *freq_table; ++static struct thermal_cooling_device *cdev; ++ ++struct cache_points { ++ unsigned long cache_freq; ++ unsigned int cache_volt; ++ unsigned long cpu_freq; ++}; ++ ++static struct regulator *krait_l2_reg; ++static struct clk *krait_l2_clk; ++static struct cache_points *krait_l2_points; ++static int nr_krait_l2_points; ++ ++static int krait_parse_cache_points(struct device *dev, ++ struct device_node *of_node) ++{ ++ const struct property *prop; ++ const __be32 *val; ++ int nr, i; ++ ++ prop = of_find_property(of_node, "cache-points-kHz", NULL); ++ if (!prop) ++ return -ENODEV; ++ if (!prop->value) ++ return -ENODATA; ++ ++ /* ++ * Each OPP is a set of tuples consisting of frequency and ++ * cpu-frequency like <freq-kHz volt-uV freq-kHz>. ++ */ ++ nr = prop->length / sizeof(u32); ++ if (nr % 3) { ++ dev_err(dev, "%s: Invalid cache points\n", __func__); ++ return -EINVAL; ++ } ++ nr /= 3; ++ ++ krait_l2_points = devm_kcalloc(dev, nr, sizeof(*krait_l2_points), ++ GFP_KERNEL); ++ if (!krait_l2_points) ++ return -ENOMEM; ++ nr_krait_l2_points = nr; ++ ++ for (i = 0, val = prop->value; i < nr; i++) { ++ unsigned long cache_freq = be32_to_cpup(val++) * 1000; ++ unsigned int cache_volt = be32_to_cpup(val++); ++ unsigned long cpu_freq = be32_to_cpup(val++) * 1000; ++ ++ krait_l2_points[i].cache_freq = cache_freq; ++ krait_l2_points[i].cache_volt = cache_volt; ++ krait_l2_points[i].cpu_freq = cpu_freq; ++ } ++ ++ return 0; ++} ++ ++static int krait_set_target(struct cpufreq_policy *policy, unsigned int index) ++{ ++ struct dev_pm_opp *opp; ++ unsigned long volt = 0, volt_old = 0, tol = 0; ++ unsigned long freq, max_cpu_freq = 0; ++ unsigned int old_freq, new_freq; ++ long freq_Hz, freq_exact; ++ int ret, i; ++ struct clk *cpu_clk; ++ struct regulator *core; ++ unsigned int cpu; ++ ++ cpu_clk = per_cpu(krait_cpu_clks, policy->cpu); ++ ++ freq_Hz = clk_round_rate(cpu_clk, freq_table[index].frequency * 1000); ++ if (freq_Hz <= 0) ++ freq_Hz = freq_table[index].frequency * 1000; ++ ++ freq_exact = freq_Hz; ++ new_freq = freq_Hz / 1000; ++ old_freq = clk_get_rate(cpu_clk) / 1000; ++ ++ core = per_cpu(krait_supply_core, policy->cpu); ++ ++ rcu_read_lock(); ++ opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_Hz); ++ if (IS_ERR(opp)) { ++ rcu_read_unlock(); ++ pr_err("failed to find OPP for %ld\n", freq_Hz); ++ return PTR_ERR(opp); ++ } ++ volt = dev_pm_opp_get_voltage(opp); ++ rcu_read_unlock(); ++ tol = volt * voltage_tolerance / 100; ++ volt_old = regulator_get_voltage(core); ++ ++ pr_debug("%u MHz, %ld mV --> %u MHz, %ld mV\n", ++ old_freq / 1000, volt_old ? volt_old / 1000 : -1, ++ new_freq / 1000, volt ? volt / 1000 : -1); ++ ++ /* scaling up? scale voltage before frequency */ ++ if (new_freq > old_freq) { ++ ret = regulator_set_voltage_tol(core, volt, tol); ++ if (ret) { ++ pr_err("failed to scale voltage up: %d\n", ret); ++ return ret; ++ } ++ } ++ ++ ret = clk_set_rate(cpu_clk, freq_exact); ++ if (ret) { ++ pr_err("failed to set clock rate: %d\n", ret); ++ return ret; ++ } ++ ++ /* scaling down? scale voltage after frequency */ ++ if (new_freq < old_freq) { ++ ret = regulator_set_voltage_tol(core, volt, tol); ++ if (ret) { ++ pr_err("failed to scale voltage down: %d\n", ret); ++ clk_set_rate(cpu_clk, old_freq * 1000); ++ } ++ } ++ ++ for_each_possible_cpu(cpu) { ++ freq = clk_get_rate(per_cpu(krait_cpu_clks, cpu)); ++ max_cpu_freq = max(max_cpu_freq, freq); ++ } ++ ++ for (i = 0; i < nr_krait_l2_points; i++) { ++ if (max_cpu_freq >= krait_l2_points[i].cpu_freq) { ++ if (krait_l2_reg) { ++ ret = regulator_set_voltage_tol(krait_l2_reg, ++ krait_l2_points[i].cache_volt, ++ tol); ++ if (ret) { ++ pr_err("failed to scale l2 voltage: %d\n", ++ ret); ++ } ++ } ++ ret = clk_set_rate(krait_l2_clk, ++ krait_l2_points[i].cache_freq); ++ if (ret) ++ pr_err("failed to scale l2 clk: %d\n", ret); ++ break; ++ } ++ ++ } ++ ++ return ret; ++} ++ ++static int krait_cpufreq_init(struct cpufreq_policy *policy) ++{ ++ int ret; ++ ++ policy->clk = per_cpu(krait_cpu_clks, policy->cpu); ++ ++ ret = cpufreq_table_validate_and_show(policy, freq_table); ++ if (ret) { ++ pr_err("%s: invalid frequency table: %d\n", __func__, ret); ++ return ret; ++ } ++ ++ policy->cpuinfo.transition_latency = transition_latency; ++ ++ return 0; ++} ++ ++static struct cpufreq_driver krait_cpufreq_driver = { ++ .flags = CPUFREQ_STICKY, ++ .verify = cpufreq_generic_frequency_table_verify, ++ .target_index = krait_set_target, ++ .get = cpufreq_generic_get, ++ .init = krait_cpufreq_init, ++ .name = "generic_krait", ++ .attr = cpufreq_generic_attr, ++}; ++ ++static int krait_cpufreq_probe(struct platform_device *pdev) ++{ ++ struct device_node *np, *cache; ++ int ret, i; ++ unsigned int cpu; ++ struct device *dev; ++ struct clk *clk; ++ struct regulator *core; ++ unsigned long freq_Hz, freq, max_cpu_freq; ++ struct dev_pm_opp *opp; ++ unsigned long volt, tol; ++ ++ cpu_dev = get_cpu_device(0); ++ if (!cpu_dev) { ++ pr_err("failed to get krait device\n"); ++ return -ENODEV; ++ } ++ ++ np = of_node_get(cpu_dev->of_node); ++ if (!np) { ++ pr_err("failed to find krait node\n"); ++ return -ENOENT; ++ } ++ ++ ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table); ++ if (ret) { ++ pr_err("failed to init cpufreq table: %d\n", ret); ++ goto out_put_node; ++ } ++ ++ of_property_read_u32(np, "voltage-tolerance", &voltage_tolerance); ++ ++ if (of_property_read_u32(np, "clock-latency", &transition_latency)) ++ transition_latency = CPUFREQ_ETERNAL; ++ ++ cache = of_find_next_cache_node(np); ++ if (cache) { ++ struct device_node *vdd; ++ ++ vdd = of_parse_phandle(cache, "vdd_dig-supply", 0); ++ if (vdd) { ++ krait_l2_reg = regulator_get(NULL, vdd->name); ++ if (IS_ERR(krait_l2_reg)) { ++ pr_warn("failed to get l2 vdd_dig supply\n"); ++ krait_l2_reg = NULL; ++ } ++ of_node_put(vdd); ++ } ++ ++ krait_l2_clk = of_clk_get(cache, 0); ++ if (!IS_ERR(krait_l2_clk)) { ++ ret = krait_parse_cache_points(&pdev->dev, cache); ++ if (ret) ++ clk_put(krait_l2_clk); ++ } ++ if (IS_ERR(krait_l2_clk) || ret) ++ krait_l2_clk = NULL; ++ } ++ ++ for_each_possible_cpu(cpu) { ++ dev = get_cpu_device(cpu); ++ if (!dev) { ++ pr_err("failed to get krait device\n"); ++ ret = -ENOENT; ++ goto out_free_table; ++ } ++ per_cpu(krait_cpu_clks, cpu) = clk = devm_clk_get(dev, NULL); ++ if (IS_ERR(clk)) { ++ ret = PTR_ERR(clk); ++ goto out_free_table; ++ } ++ core = devm_regulator_get(dev, "core"); ++ if (IS_ERR(core)) { ++ pr_debug("failed to get core regulator\n"); ++ ret = PTR_ERR(core); ++ goto out_free_table; ++ } ++ per_cpu(krait_supply_core, cpu) = core; ++ ++ freq_Hz = clk_get_rate(clk); ++ ++ rcu_read_lock(); ++ opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_Hz); ++ if (IS_ERR(opp)) { ++ rcu_read_unlock(); ++ pr_err("failed to find OPP for %ld\n", freq_Hz); ++ ret = PTR_ERR(opp); ++ goto out_free_table; ++ } ++ volt = dev_pm_opp_get_voltage(opp); ++ rcu_read_unlock(); ++ ++ tol = volt * voltage_tolerance / 100; ++ ret = regulator_set_voltage_tol(core, volt, tol); ++ if (ret) { ++ pr_err("failed to scale voltage up: %d\n", ret); ++ goto out_free_table; ++ } ++ ret = regulator_enable(core); ++ if (ret) { ++ pr_err("failed to enable regulator: %d\n", ret); ++ goto out_free_table; ++ } ++ max_cpu_freq = max(max_cpu_freq, freq); ++ } ++ ++ for (i = 0; i < nr_krait_l2_points; i++) { ++ if (max_cpu_freq >= krait_l2_points[i].cpu_freq) { ++ if (krait_l2_reg) { ++ ret = regulator_set_voltage_tol(krait_l2_reg, ++ krait_l2_points[i].cache_volt, ++ tol); ++ if (ret) ++ pr_err("failed to scale l2 voltage: %d\n", ++ ret); ++ ret = regulator_enable(krait_l2_reg); ++ if (ret) ++ pr_err("failed to enable l2 voltage: %d\n", ++ ret); ++ } ++ break; ++ } ++ ++ } ++ ++ ret = cpufreq_register_driver(&krait_cpufreq_driver); ++ if (ret) { ++ pr_err("failed register driver: %d\n", ret); ++ goto out_free_table; ++ } ++ of_node_put(np); ++ ++ /* ++ * For now, just loading the cooling device; ++ * thermal DT code takes care of matching them. ++ */ ++ for_each_possible_cpu(cpu) { ++ dev = get_cpu_device(cpu); ++ np = of_node_get(dev->of_node); ++ if (of_find_property(np, "#cooling-cells", NULL)) { ++ cdev = of_cpufreq_cooling_register(np, cpumask_of(cpu)); ++ if (IS_ERR(cdev)) ++ pr_err("running cpufreq without cooling device: %ld\n", ++ PTR_ERR(cdev)); ++ } ++ of_node_put(np); ++ } ++ ++ return 0; ++ ++out_free_table: ++ regulator_put(krait_l2_reg); ++ clk_put(krait_l2_clk); ++ dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table); ++out_put_node: ++ of_node_put(np); ++ return ret; ++} ++ ++static int krait_cpufreq_remove(struct platform_device *pdev) ++{ ++ cpufreq_cooling_unregister(cdev); ++ cpufreq_unregister_driver(&krait_cpufreq_driver); ++ dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table); ++ clk_put(krait_l2_clk); ++ regulator_put(krait_l2_reg); ++ ++ return 0; ++} ++ ++static struct platform_driver krait_cpufreq_platdrv = { ++ .driver = { ++ .name = "cpufreq-krait", ++ .owner = THIS_MODULE, ++ }, ++ .probe = krait_cpufreq_probe, ++ .remove = krait_cpufreq_remove, ++}; ++module_platform_driver(krait_cpufreq_platdrv); ++ ++MODULE_DESCRIPTION("Krait CPUfreq driver"); ++MODULE_LICENSE("GPL v2"); +--- a/drivers/cpufreq/qcom-cpufreq.c ++++ b/drivers/cpufreq/qcom-cpufreq.c +@@ -168,11 +168,8 @@ static int __init qcom_cpufreq_populate_ + + static int __init qcom_cpufreq_driver_init(void) + { +- struct cpufreq_dt_platform_data pdata = { .independent_clocks = true }; + struct platform_device_info devinfo = { +- .name = "cpufreq-dt", +- .data = &pdata, +- .size_data = sizeof(pdata), ++ .name = "cpufreq-krait", + }; + struct device *cpu_dev; + struct device_node *np; diff --git a/target/linux/ipq806x/patches-3.18/700-add-gmac-dts-suport.patch b/target/linux/ipq806x/patches-3.18/700-add-gmac-dts-suport.patch index 2981da6785..f0c511a332 100644 --- a/target/linux/ipq806x/patches-3.18/700-add-gmac-dts-suport.patch +++ b/target/linux/ipq806x/patches-3.18/700-add-gmac-dts-suport.patch @@ -127,7 +127,7 @@ / { model = "Qualcomm IPQ8064"; -@@ -577,5 +578,42 @@ +@@ -637,5 +638,42 @@ dr_mode = "host"; }; }; diff --git a/target/linux/ipq806x/patches-4.0/133-ARM-Add-Krait-L2-register-accessor-functions.patch b/target/linux/ipq806x/patches-4.0/133-ARM-Add-Krait-L2-register-accessor-functions.patch new file mode 100644 index 0000000000..36a92c858a --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/133-ARM-Add-Krait-L2-register-accessor-functions.patch @@ -0,0 +1,144 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,01/13] ARM: Add Krait L2 register accessor functions +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063051 +Message-Id: <1426920332-9340-2-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org>, + Mark Rutland <mark.rutland@arm.com>, Russell King <linux@arm.linux.org.uk>, + Courtney Cavin <courtney.cavin@sonymobile.com> +Date: Fri, 20 Mar 2015 23:45:20 -0700 + +Krait CPUs have a handful of L2 cache controller registers that +live behind a cp15 based indirection register. First you program +the indirection register (l2cpselr) to point the L2 'window' +register (l2cpdr) at what you want to read/write. Then you +read/write the 'window' register to do what you want. The +l2cpselr register is not banked per-cpu so we must lock around +accesses to it to prevent other CPUs from re-pointing l2cpdr +underneath us. + +Cc: Mark Rutland <mark.rutland@arm.com> +Cc: Russell King <linux@arm.linux.org.uk> +Cc: Courtney Cavin <courtney.cavin@sonymobile.com> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +arch/arm/common/Kconfig | 3 ++ + arch/arm/common/Makefile | 1 + + arch/arm/common/krait-l2-accessors.c | 58 +++++++++++++++++++++++++++++++ + arch/arm/include/asm/krait-l2-accessors.h | 20 +++++++++++ + 4 files changed, 82 insertions(+) + create mode 100644 arch/arm/common/krait-l2-accessors.c + create mode 100644 arch/arm/include/asm/krait-l2-accessors.h + +--- a/arch/arm/common/Kconfig ++++ b/arch/arm/common/Kconfig +@@ -9,6 +9,9 @@ config DMABOUNCE + bool + select ZONE_DMA + ++config KRAIT_L2_ACCESSORS ++ bool ++ + config SHARP_LOCOMO + bool + +--- a/arch/arm/common/Makefile ++++ b/arch/arm/common/Makefile +@@ -7,6 +7,7 @@ obj-y += firmware.o + obj-$(CONFIG_ICST) += icst.o + obj-$(CONFIG_SA1111) += sa1111.o + obj-$(CONFIG_DMABOUNCE) += dmabounce.o ++obj-$(CONFIG_KRAIT_L2_ACCESSORS) += krait-l2-accessors.o + obj-$(CONFIG_SHARP_LOCOMO) += locomo.o + obj-$(CONFIG_SHARP_PARAM) += sharpsl_param.o + obj-$(CONFIG_SHARP_SCOOP) += scoop.o +--- /dev/null ++++ b/arch/arm/common/krait-l2-accessors.c +@@ -0,0 +1,58 @@ ++/* ++ * Copyright (c) 2011-2013, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/spinlock.h> ++#include <linux/export.h> ++ ++#include <asm/barrier.h> ++#include <asm/krait-l2-accessors.h> ++ ++static DEFINE_RAW_SPINLOCK(krait_l2_lock); ++ ++void krait_set_l2_indirect_reg(u32 addr, u32 val) ++{ ++ unsigned long flags; ++ ++ raw_spin_lock_irqsave(&krait_l2_lock, flags); ++ /* ++ * Select the L2 window by poking l2cpselr, then write to the window ++ * via l2cpdr. ++ */ ++ asm volatile ("mcr p15, 3, %0, c15, c0, 6 @ l2cpselr" : : "r" (addr)); ++ isb(); ++ asm volatile ("mcr p15, 3, %0, c15, c0, 7 @ l2cpdr" : : "r" (val)); ++ isb(); ++ ++ raw_spin_unlock_irqrestore(&krait_l2_lock, flags); ++} ++EXPORT_SYMBOL(krait_set_l2_indirect_reg); ++ ++u32 krait_get_l2_indirect_reg(u32 addr) ++{ ++ u32 val; ++ unsigned long flags; ++ ++ raw_spin_lock_irqsave(&krait_l2_lock, flags); ++ /* ++ * Select the L2 window by poking l2cpselr, then read from the window ++ * via l2cpdr. ++ */ ++ asm volatile ("mcr p15, 3, %0, c15, c0, 6 @ l2cpselr" : : "r" (addr)); ++ isb(); ++ asm volatile ("mrc p15, 3, %0, c15, c0, 7 @ l2cpdr" : "=r" (val)); ++ ++ raw_spin_unlock_irqrestore(&krait_l2_lock, flags); ++ ++ return val; ++} ++EXPORT_SYMBOL(krait_get_l2_indirect_reg); +--- /dev/null ++++ b/arch/arm/include/asm/krait-l2-accessors.h +@@ -0,0 +1,20 @@ ++/* ++ * Copyright (c) 2011-2013, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#ifndef __ASMARM_KRAIT_L2_ACCESSORS_H ++#define __ASMARM_KRAIT_L2_ACCESSORS_H ++ ++extern void krait_set_l2_indirect_reg(u32 addr, u32 val); ++extern u32 krait_get_l2_indirect_reg(u32 addr); ++ ++#endif diff --git a/target/linux/ipq806x/patches-4.0/134-clk-mux-Split-out-register-accessors-for-reuse.patch b/target/linux/ipq806x/patches-4.0/134-clk-mux-Split-out-register-accessors-for-reuse.patch new file mode 100644 index 0000000000..3a475fba3d --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/134-clk-mux-Split-out-register-accessors-for-reuse.patch @@ -0,0 +1,192 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,02/13] clk: mux: Split out register accessors for reuse +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063111 +Message-Id: <1426920332-9340-3-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:21 -0700 + +We want to reuse the logic in clk-mux.c for other clock drivers +that don't use readl as register accessors. Fortunately, there +really isn't much to the mux code besides the table indirection +and quirk flags if you assume any bit shifting and masking has +been done already. Pull that logic out into reusable functions +that operate on an optional table and some flags so that other +drivers can use the same logic. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +drivers/clk/clk-mux.c | 76 +++++++++++++++++++++++++++----------------- + include/linux/clk-provider.h | 9 ++++-- + 2 files changed, 54 insertions(+), 31 deletions(-) + +--- a/drivers/clk/clk-mux.c ++++ b/drivers/clk/clk-mux.c +@@ -29,35 +29,24 @@ + + #define to_clk_mux(_hw) container_of(_hw, struct clk_mux, hw) + +-static u8 clk_mux_get_parent(struct clk_hw *hw) ++unsigned int clk_mux_get_parent(struct clk_hw *hw, unsigned int val, ++ unsigned int *table, unsigned long flags) + { +- struct clk_mux *mux = to_clk_mux(hw); + int num_parents = __clk_get_num_parents(hw->clk); +- u32 val; + +- /* +- * FIXME need a mux-specific flag to determine if val is bitwise or numeric +- * e.g. sys_clkin_ck's clksel field is 3 bits wide, but ranges from 0x1 +- * to 0x7 (index starts at one) +- * OTOH, pmd_trace_clk_mux_ck uses a separate bit for each clock, so +- * val = 0x4 really means "bit 2, index starts at bit 0" +- */ +- val = clk_readl(mux->reg) >> mux->shift; +- val &= mux->mask; +- +- if (mux->table) { ++ if (table) { + int i; + + for (i = 0; i < num_parents; i++) +- if (mux->table[i] == val) ++ if (table[i] == val) + return i; + return -EINVAL; + } + +- if (val && (mux->flags & CLK_MUX_INDEX_BIT)) ++ if (val && (flags & CLK_MUX_INDEX_BIT)) + val = ffs(val) - 1; + +- if (val && (mux->flags & CLK_MUX_INDEX_ONE)) ++ if (val && (flags & CLK_MUX_INDEX_ONE)) + val--; + + if (val >= num_parents) +@@ -65,24 +54,53 @@ static u8 clk_mux_get_parent(struct clk_ + + return val; + } ++EXPORT_SYMBOL_GPL(clk_mux_get_parent); + +-static int clk_mux_set_parent(struct clk_hw *hw, u8 index) ++static u8 _clk_mux_get_parent(struct clk_hw *hw) + { + struct clk_mux *mux = to_clk_mux(hw); + u32 val; +- unsigned long flags = 0; + +- if (mux->table) +- index = mux->table[index]; ++ /* ++ * FIXME need a mux-specific flag to determine if val is bitwise or numeric ++ * e.g. sys_clkin_ck's clksel field is 3 bits wide, but ranges from 0x1 ++ * to 0x7 (index starts at one) ++ * OTOH, pmd_trace_clk_mux_ck uses a separate bit for each clock, so ++ * val = 0x4 really means "bit 2, index starts at bit 0" ++ */ ++ val = clk_readl(mux->reg) >> mux->shift; ++ val &= mux->mask; ++ ++ return clk_mux_get_parent(hw, val, mux->table, mux->flags); ++} + +- else { +- if (mux->flags & CLK_MUX_INDEX_BIT) +- index = 1 << index; ++unsigned int clk_mux_reindex(u8 index, unsigned int *table, ++ unsigned long flags) ++{ ++ unsigned int val = index; + +- if (mux->flags & CLK_MUX_INDEX_ONE) +- index++; ++ if (table) { ++ val = table[val]; ++ } else { ++ if (flags & CLK_MUX_INDEX_BIT) ++ val = 1 << index; ++ ++ if (flags & CLK_MUX_INDEX_ONE) ++ val++; + } + ++ return val; ++} ++EXPORT_SYMBOL_GPL(clk_mux_reindex); ++ ++static int clk_mux_set_parent(struct clk_hw *hw, u8 index) ++{ ++ struct clk_mux *mux = to_clk_mux(hw); ++ u32 val; ++ unsigned long flags = 0; ++ ++ index = clk_mux_reindex(index, mux->table, mux->flags); ++ + if (mux->lock) + spin_lock_irqsave(mux->lock, flags); + +@@ -102,21 +120,21 @@ static int clk_mux_set_parent(struct clk + } + + const struct clk_ops clk_mux_ops = { +- .get_parent = clk_mux_get_parent, ++ .get_parent = _clk_mux_get_parent, + .set_parent = clk_mux_set_parent, + .determine_rate = __clk_mux_determine_rate, + }; + EXPORT_SYMBOL_GPL(clk_mux_ops); + + const struct clk_ops clk_mux_ro_ops = { +- .get_parent = clk_mux_get_parent, ++ .get_parent = _clk_mux_get_parent, + }; + EXPORT_SYMBOL_GPL(clk_mux_ro_ops); + + struct clk *clk_register_mux_table(struct device *dev, const char *name, + const char **parent_names, u8 num_parents, unsigned long flags, + void __iomem *reg, u8 shift, u32 mask, +- u8 clk_mux_flags, u32 *table, spinlock_t *lock) ++ u8 clk_mux_flags, unsigned int *table, spinlock_t *lock) + { + struct clk_mux *mux; + struct clk *clk; +--- a/include/linux/clk-provider.h ++++ b/include/linux/clk-provider.h +@@ -409,7 +409,7 @@ void clk_unregister_divider(struct clk * + struct clk_mux { + struct clk_hw hw; + void __iomem *reg; +- u32 *table; ++ unsigned int *table; + u32 mask; + u8 shift; + u8 flags; +@@ -425,6 +425,11 @@ struct clk_mux { + extern const struct clk_ops clk_mux_ops; + extern const struct clk_ops clk_mux_ro_ops; + ++unsigned int clk_mux_get_parent(struct clk_hw *hw, unsigned int val, ++ unsigned int *table, unsigned long flags); ++unsigned int clk_mux_reindex(u8 index, unsigned int *table, ++ unsigned long flags); ++ + struct clk *clk_register_mux(struct device *dev, const char *name, + const char **parent_names, u8 num_parents, unsigned long flags, + void __iomem *reg, u8 shift, u8 width, +@@ -433,7 +438,7 @@ struct clk *clk_register_mux(struct devi + struct clk *clk_register_mux_table(struct device *dev, const char *name, + const char **parent_names, u8 num_parents, unsigned long flags, + void __iomem *reg, u8 shift, u32 mask, +- u8 clk_mux_flags, u32 *table, spinlock_t *lock); ++ u8 clk_mux_flags, unsigned int *table, spinlock_t *lock); + + void clk_unregister_mux(struct clk *clk); + diff --git a/target/linux/ipq806x/patches-4.0/135-clk-Avoid-sending-high-rates-to-downstream-clocks-during-set_rate.patch b/target/linux/ipq806x/patches-4.0/135-clk-Avoid-sending-high-rates-to-downstream-clocks-during-set_rate.patch new file mode 100644 index 0000000000..f699521dd1 --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/135-clk-Avoid-sending-high-rates-to-downstream-clocks-during-set_rate.patch @@ -0,0 +1,130 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3, 03/13] clk: Avoid sending high rates to downstream clocks during + set_rate +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063271 +Message-Id: <1426920332-9340-4-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:22 -0700 + +If a clock is on and we call clk_set_rate() on it we may get into +a situation where the clock temporarily increases in rate +dramatically while we walk the tree and call .set_rate() ops. For +example, consider a case where a PLL feeds into a divider. +Initially the divider is set to divide by 1 and the PLL is +running fairly slow (100MHz). The downstream consumer of the +divider output can only handle rates =< 400 MHz, but the divider +can only choose between divisors of 1 and 4. + + +-----+ +----------------+ + | PLL |-->| div 1 or div 4 |---> consumer device + +-----+ +----------------+ + +To achieve a rate of 400MHz on the output of the divider, we +would have to set the rate of the PLL to 1.6 GHz and then divide +it by 4. The current code would set the PLL to 1.6GHz first while +the divider is still set to 1, thus causing the downstream +consumer of the clock to receive a few clock cycles of 1.6GHz +clock (far beyond it's maximum acceptable rate). We should be +changing the divider first before increasing the PLL rate to +avoid this problem. + +Therefore, set the rate of any child clocks that are increasing +in rate from their current rate so that they can increase their +dividers if necessary. We assume that there isn't such a thing as +minimum rate requirements. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +drivers/clk/clk.c | 34 ++++++++++++++++++++++------------ + 1 file changed, 22 insertions(+), 12 deletions(-) + +--- a/drivers/clk/clk.c ++++ b/drivers/clk/clk.c +@@ -1688,21 +1688,24 @@ static struct clk_core *clk_propagate_ra + * walk down a subtree and set the new rates notifying the rate + * change on the way + */ +-static void clk_change_rate(struct clk_core *clk) ++static void ++clk_change_rate(struct clk_core *clk, unsigned long best_parent_rate) + { + struct clk_core *child; + struct hlist_node *tmp; + unsigned long old_rate; +- unsigned long best_parent_rate = 0; + bool skip_set_rate = false; + struct clk_core *old_parent; + +- old_rate = clk->rate; ++ hlist_for_each_entry(child, &clk->children, child_node) { ++ /* Skip children who will be reparented to another clock */ ++ if (child->new_parent && child->new_parent != clk) ++ continue; ++ if (child->new_rate > child->rate) ++ clk_change_rate(child, clk->new_rate); ++ } + +- if (clk->new_parent) +- best_parent_rate = clk->new_parent->rate; +- else if (clk->parent) +- best_parent_rate = clk->parent->rate; ++ old_rate = clk->rate; + + if (clk->new_parent && clk->new_parent != clk->parent) { + old_parent = __clk_set_parent_before(clk, clk->new_parent); +@@ -1722,7 +1725,7 @@ static void clk_change_rate(struct clk_c + if (!skip_set_rate && clk->ops->set_rate) + clk->ops->set_rate(clk->hw, clk->new_rate, best_parent_rate); + +- clk->rate = clk_recalc(clk, best_parent_rate); ++ clk->rate = clk->new_rate; + + if (clk->notifier_count && old_rate != clk->rate) + __clk_notify(clk, POST_RATE_CHANGE, old_rate, clk->rate); +@@ -1735,12 +1738,13 @@ static void clk_change_rate(struct clk_c + /* Skip children who will be reparented to another clock */ + if (child->new_parent && child->new_parent != clk) + continue; +- clk_change_rate(child); ++ if (child->new_rate != child->rate) ++ clk_change_rate(child, clk->new_rate); + } + + /* handle the new child who might not be in clk->children yet */ +- if (clk->new_child) +- clk_change_rate(clk->new_child); ++ if (clk->new_child && clk->new_child->new_rate != clk->new_child->rate) ++ clk_change_rate(clk->new_child, clk->new_rate); + } + + static int clk_core_set_rate_nolock(struct clk_core *clk, +@@ -1749,6 +1753,7 @@ static int clk_core_set_rate_nolock(stru + struct clk_core *top, *fail_clk; + unsigned long rate = req_rate; + int ret = 0; ++ unsigned long parent_rate; + + if (!clk) + return 0; +@@ -1774,8 +1779,13 @@ static int clk_core_set_rate_nolock(stru + return -EBUSY; + } + ++ if (top->parent) ++ parent_rate = top->parent->rate; ++ else ++ parent_rate = 0; ++ + /* change the rates */ +- clk_change_rate(top); ++ clk_change_rate(top, parent_rate); + + clk->req_rate = req_rate; + diff --git a/target/linux/ipq806x/patches-4.0/136-clk-Add-safe-switch-hook.patch b/target/linux/ipq806x/patches-4.0/136-clk-Add-safe-switch-hook.patch new file mode 100644 index 0000000000..d3363f84a8 --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/136-clk-Add-safe-switch-hook.patch @@ -0,0 +1,164 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,04/13] clk: Add safe switch hook +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063211 +Message-Id: <1426920332-9340-5-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:23 -0700 + +Sometimes clocks can't accept their parent source turning off +while the source is reprogrammed to a different rate. Most +notably CPU clocks require a way to switch away from the current +PLL they're running on, reprogram that PLL to a new rate, and +then switch back to the PLL with the new rate once they're done. +Add a hook that drivers can implement allowing them to return a +'safe parent' that they can switch their parent to while the +upstream source is reprogrammed to support this. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +This patch is good enough for Krait, but soon I'll need to +support a "safe rate" where we ask a clock what rate it needs to be running +at to be sure it's within voltage constraints. Right now safe parent +handles that problem on Krait, but on other platforms it won't work. + + drivers/clk/clk.c | 61 ++++++++++++++++++++++++++++++++++++++------ + include/linux/clk-provider.h | 1 + + 2 files changed, 54 insertions(+), 8 deletions(-) + +--- a/drivers/clk/clk.c ++++ b/drivers/clk/clk.c +@@ -56,9 +56,12 @@ struct clk_core { + struct clk_core **parents; + u8 num_parents; + u8 new_parent_index; ++ u8 safe_parent_index; + unsigned long rate; + unsigned long req_rate; ++ unsigned long old_rate; + unsigned long new_rate; ++ struct clk_core *safe_parent; + struct clk_core *new_parent; + struct clk_core *new_child; + unsigned long flags; +@@ -1549,7 +1552,8 @@ out: + static void clk_calc_subtree(struct clk_core *clk, unsigned long new_rate, + struct clk_core *new_parent, u8 p_index) + { +- struct clk_core *child; ++ struct clk_core *child, *parent; ++ struct clk_hw *parent_hw; + + clk->new_rate = new_rate; + clk->new_parent = new_parent; +@@ -1559,6 +1563,18 @@ static void clk_calc_subtree(struct clk_ + if (new_parent && new_parent != clk->parent) + new_parent->new_child = clk; + ++ if (clk->ops->get_safe_parent) { ++ parent_hw = clk->ops->get_safe_parent(clk->hw); ++ if (parent_hw) { ++ parent = parent_hw->core; ++ p_index = clk_fetch_parent_index(clk, parent); ++ clk->safe_parent_index = p_index; ++ clk->safe_parent = parent; ++ } ++ } else { ++ clk->safe_parent = NULL; ++ } ++ + hlist_for_each_entry(child, &clk->children, child_node) { + child->new_rate = clk_recalc(child, new_rate); + clk_calc_subtree(child, child->new_rate, NULL, 0); +@@ -1654,14 +1670,43 @@ static struct clk_core *clk_propagate_ra + unsigned long event) + { + struct clk_core *child, *tmp_clk, *fail_clk = NULL; ++ struct clk_core *old_parent; + int ret = NOTIFY_DONE; + +- if (clk->rate == clk->new_rate) ++ if (clk->rate == clk->new_rate && event != POST_RATE_CHANGE) + return NULL; + ++ switch (event) { ++ case PRE_RATE_CHANGE: ++ if (clk->safe_parent) ++ clk->ops->set_parent(clk->hw, clk->safe_parent_index); ++ clk->old_rate = clk->rate; ++ break; ++ case POST_RATE_CHANGE: ++ if (clk->safe_parent) { ++ old_parent = __clk_set_parent_before(clk, ++ clk->new_parent); ++ if (clk->ops->set_rate_and_parent) { ++ clk->ops->set_rate_and_parent(clk->hw, ++ clk->new_rate, ++ clk->new_parent ? ++ clk->new_parent->rate : 0, ++ clk->new_parent_index); ++ } else if (clk->ops->set_parent) { ++ clk->ops->set_parent(clk->hw, ++ clk->new_parent_index); ++ } ++ __clk_set_parent_after(clk, clk->new_parent, ++ old_parent); ++ } ++ break; ++ } ++ + if (clk->notifier_count) { +- ret = __clk_notify(clk, event, clk->rate, clk->new_rate); +- if (ret & NOTIFY_STOP_MASK) ++ if (event != POST_RATE_CHANGE || clk->old_rate != clk->rate) ++ ret = __clk_notify(clk, event, clk->old_rate, ++ clk->new_rate); ++ if (ret & NOTIFY_STOP_MASK && event != POST_RATE_CHANGE) + fail_clk = clk; + } + +@@ -1707,7 +1752,8 @@ clk_change_rate(struct clk_core *clk, un + + old_rate = clk->rate; + +- if (clk->new_parent && clk->new_parent != clk->parent) { ++ if (clk->new_parent && clk->new_parent != clk->parent && ++ !clk->safe_parent) { + old_parent = __clk_set_parent_before(clk, clk->new_parent); + + if (clk->ops->set_rate_and_parent) { +@@ -1727,9 +1773,6 @@ clk_change_rate(struct clk_core *clk, un + + clk->rate = clk->new_rate; + +- if (clk->notifier_count && old_rate != clk->rate) +- __clk_notify(clk, POST_RATE_CHANGE, old_rate, clk->rate); +- + /* + * Use safe iteration, as change_rate can actually swap parents + * for certain clock types. +@@ -1789,6 +1832,8 @@ static int clk_core_set_rate_nolock(stru + + clk->req_rate = req_rate; + ++ clk_propagate_rate_change(top, POST_RATE_CHANGE); ++ + return ret; + } + +--- a/include/linux/clk-provider.h ++++ b/include/linux/clk-provider.h +@@ -183,6 +183,7 @@ struct clk_ops { + struct clk_hw **best_parent_hw); + int (*set_parent)(struct clk_hw *hw, u8 index); + u8 (*get_parent)(struct clk_hw *hw); ++ struct clk_hw *(*get_safe_parent)(struct clk_hw *hw); + int (*set_rate)(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate); + int (*set_rate_and_parent)(struct clk_hw *hw, diff --git a/target/linux/ipq806x/patches-4.0/137-clk-qcom-Add-support-for-High-Frequency-PLLs-HFPLLs.patch b/target/linux/ipq806x/patches-4.0/137-clk-qcom-Add-support-for-High-Frequency-PLLs-HFPLLs.patch new file mode 100644 index 0000000000..6fad6e8a0c --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/137-clk-qcom-Add-support-for-High-Frequency-PLLs-HFPLLs.patch @@ -0,0 +1,351 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,05/13] clk: qcom: Add support for High-Frequency PLLs (HFPLLs) +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063261 +Message-Id: <1426920332-9340-6-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:24 -0700 + +HFPLLs are the main frequency source for Krait CPU clocks. Add +support for changing the rate of these PLLs. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +I'd really like to get rid of __clk_hfpll_init_once() if possible... + + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/clk-hfpll.c | 253 +++++++++++++++++++++++++++++++++++++++++++ + drivers/clk/qcom/clk-hfpll.h | 54 +++++++++ + 3 files changed, 308 insertions(+) + create mode 100644 drivers/clk/qcom/clk-hfpll.c + create mode 100644 drivers/clk/qcom/clk-hfpll.h + +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -8,6 +8,7 @@ clk-qcom-y += clk-rcg2.o + clk-qcom-y += clk-branch.o + clk-qcom-y += clk-regmap-divider.o + clk-qcom-y += clk-regmap-mux.o ++clk-qcom-y += clk-hfpll.o + clk-qcom-y += reset.o + + obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o +--- /dev/null ++++ b/drivers/clk/qcom/clk-hfpll.c +@@ -0,0 +1,253 @@ ++/* ++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++#include <linux/kernel.h> ++#include <linux/export.h> ++#include <linux/regmap.h> ++#include <linux/delay.h> ++#include <linux/err.h> ++#include <linux/clk-provider.h> ++#include <linux/spinlock.h> ++ ++#include "clk-regmap.h" ++#include "clk-hfpll.h" ++ ++#define PLL_OUTCTRL BIT(0) ++#define PLL_BYPASSNL BIT(1) ++#define PLL_RESET_N BIT(2) ++ ++/* Initialize a HFPLL at a given rate and enable it. */ ++static void __clk_hfpll_init_once(struct clk_hw *hw) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ ++ if (likely(h->init_done)) ++ return; ++ ++ /* Configure PLL parameters for integer mode. */ ++ if (hd->config_val) ++ regmap_write(regmap, hd->config_reg, hd->config_val); ++ regmap_write(regmap, hd->m_reg, 0); ++ regmap_write(regmap, hd->n_reg, 1); ++ ++ if (hd->user_reg) { ++ u32 regval = hd->user_val; ++ unsigned long rate; ++ ++ rate = __clk_get_rate(hw->clk); ++ ++ /* Pick the right VCO. */ ++ if (hd->user_vco_mask && rate > hd->low_vco_max_rate) ++ regval |= hd->user_vco_mask; ++ regmap_write(regmap, hd->user_reg, regval); ++ } ++ ++ if (hd->droop_reg) ++ regmap_write(regmap, hd->droop_reg, hd->droop_val); ++ ++ h->init_done = true; ++} ++ ++static void __clk_hfpll_enable(struct clk_hw *hw) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ u32 val; ++ ++ __clk_hfpll_init_once(hw); ++ ++ /* Disable PLL bypass mode. */ ++ regmap_update_bits(regmap, hd->mode_reg, PLL_BYPASSNL, PLL_BYPASSNL); ++ ++ /* ++ * H/W requires a 5us delay between disabling the bypass and ++ * de-asserting the reset. Delay 10us just to be safe. ++ */ ++ udelay(10); ++ ++ /* De-assert active-low PLL reset. */ ++ regmap_update_bits(regmap, hd->mode_reg, PLL_RESET_N, PLL_RESET_N); ++ ++ /* Wait for PLL to lock. */ ++ if (hd->status_reg) { ++ do { ++ regmap_read(regmap, hd->status_reg, &val); ++ } while (!(val & BIT(hd->lock_bit))); ++ } else { ++ udelay(60); ++ } ++ ++ /* Enable PLL output. */ ++ regmap_update_bits(regmap, hd->mode_reg, PLL_OUTCTRL, PLL_OUTCTRL); ++} ++ ++/* Enable an already-configured HFPLL. */ ++static int clk_hfpll_enable(struct clk_hw *hw) ++{ ++ unsigned long flags; ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ u32 mode; ++ ++ spin_lock_irqsave(&h->lock, flags); ++ regmap_read(regmap, hd->mode_reg, &mode); ++ if (!(mode & (PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL))) ++ __clk_hfpll_enable(hw); ++ spin_unlock_irqrestore(&h->lock, flags); ++ ++ return 0; ++} ++ ++static void __clk_hfpll_disable(struct clk_hfpll *h) ++{ ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ ++ /* ++ * Disable the PLL output, disable test mode, enable the bypass mode, ++ * and assert the reset. ++ */ ++ regmap_update_bits(regmap, hd->mode_reg, ++ PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL, 0); ++} ++ ++static void clk_hfpll_disable(struct clk_hw *hw) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ unsigned long flags; ++ ++ spin_lock_irqsave(&h->lock, flags); ++ __clk_hfpll_disable(h); ++ spin_unlock_irqrestore(&h->lock, flags); ++} ++ ++static long clk_hfpll_round_rate(struct clk_hw *hw, unsigned long rate, ++ unsigned long *parent_rate) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ unsigned long rrate; ++ ++ rate = clamp(rate, hd->min_rate, hd->max_rate); ++ ++ rrate = DIV_ROUND_UP(rate, *parent_rate) * *parent_rate; ++ if (rrate > hd->max_rate) ++ rrate -= *parent_rate; ++ ++ return rrate; ++} ++ ++/* ++ * For optimization reasons, assumes no downstream clocks are actively using ++ * it. ++ */ ++static int clk_hfpll_set_rate(struct clk_hw *hw, unsigned long rate, ++ unsigned long parent_rate) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ unsigned long flags; ++ u32 l_val, val; ++ bool enabled; ++ ++ l_val = rate / parent_rate; ++ ++ spin_lock_irqsave(&h->lock, flags); ++ ++ enabled = __clk_is_enabled(hw->clk); ++ if (enabled) ++ __clk_hfpll_disable(h); ++ ++ /* Pick the right VCO. */ ++ if (hd->user_reg && hd->user_vco_mask) { ++ regmap_read(regmap, hd->user_reg, &val); ++ if (rate <= hd->low_vco_max_rate) ++ val &= ~hd->user_vco_mask; ++ else ++ val |= hd->user_vco_mask; ++ regmap_write(regmap, hd->user_reg, val); ++ } ++ ++ regmap_write(regmap, hd->l_reg, l_val); ++ ++ if (enabled) ++ __clk_hfpll_enable(hw); ++ ++ spin_unlock_irqrestore(&h->lock, flags); ++ ++ return 0; ++} ++ ++static unsigned long clk_hfpll_recalc_rate(struct clk_hw *hw, ++ unsigned long parent_rate) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ u32 l_val; ++ ++ regmap_read(regmap, hd->l_reg, &l_val); ++ ++ return l_val * parent_rate; ++} ++ ++static void clk_hfpll_init(struct clk_hw *hw) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ u32 mode, status; ++ ++ regmap_read(regmap, hd->mode_reg, &mode); ++ if (mode != (PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL)) { ++ __clk_hfpll_init_once(hw); ++ return; ++ } ++ ++ if (hd->status_reg) { ++ regmap_read(regmap, hd->status_reg, &status); ++ if (!(status & BIT(hd->lock_bit))) { ++ WARN(1, "HFPLL %s is ON, but not locked!\n", ++ __clk_get_name(hw->clk)); ++ clk_hfpll_disable(hw); ++ __clk_hfpll_init_once(hw); ++ } ++ } ++} ++ ++static int hfpll_is_enabled(struct clk_hw *hw) ++{ ++ struct clk_hfpll *h = to_clk_hfpll(hw); ++ struct hfpll_data const *hd = h->d; ++ struct regmap *regmap = h->clkr.regmap; ++ u32 mode; ++ ++ regmap_read(regmap, hd->mode_reg, &mode); ++ mode &= 0x7; ++ return mode == (PLL_BYPASSNL | PLL_RESET_N | PLL_OUTCTRL); ++} ++ ++const struct clk_ops clk_ops_hfpll = { ++ .enable = clk_hfpll_enable, ++ .disable = clk_hfpll_disable, ++ .is_enabled = hfpll_is_enabled, ++ .round_rate = clk_hfpll_round_rate, ++ .set_rate = clk_hfpll_set_rate, ++ .recalc_rate = clk_hfpll_recalc_rate, ++ .init = clk_hfpll_init, ++}; ++EXPORT_SYMBOL_GPL(clk_ops_hfpll); +--- /dev/null ++++ b/drivers/clk/qcom/clk-hfpll.h +@@ -0,0 +1,54 @@ ++/* ++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++#ifndef __QCOM_CLK_HFPLL_H__ ++#define __QCOM_CLK_HFPLL_H__ ++ ++#include <linux/clk-provider.h> ++#include <linux/spinlock.h> ++#include "clk-regmap.h" ++ ++struct hfpll_data { ++ u32 mode_reg; ++ u32 l_reg; ++ u32 m_reg; ++ u32 n_reg; ++ u32 user_reg; ++ u32 droop_reg; ++ u32 config_reg; ++ u32 status_reg; ++ u8 lock_bit; ++ ++ u32 droop_val; ++ u32 config_val; ++ u32 user_val; ++ u32 user_vco_mask; ++ unsigned long low_vco_max_rate; ++ ++ unsigned long min_rate; ++ unsigned long max_rate; ++}; ++ ++struct clk_hfpll { ++ struct hfpll_data const *d; ++ int init_done; ++ ++ struct clk_regmap clkr; ++ spinlock_t lock; ++}; ++ ++#define to_clk_hfpll(_hw) \ ++ container_of(to_clk_regmap(_hw), struct clk_hfpll, clkr) ++ ++extern const struct clk_ops clk_ops_hfpll; ++ ++#endif diff --git a/target/linux/ipq806x/patches-4.0/138-clk-qcom-Add-HFPLL-driver.patch b/target/linux/ipq806x/patches-4.0/138-clk-qcom-Add-HFPLL-driver.patch new file mode 100644 index 0000000000..b1f870ad83 --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/138-clk-qcom-Add-HFPLL-driver.patch @@ -0,0 +1,206 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,06/13] clk: qcom: Add HFPLL driver +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063231 +Message-Id: <1426920332-9340-7-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org> +Date: Fri, 20 Mar 2015 23:45:25 -0700 + +On some devices (MSM8974 for example), the HFPLLs are +instantiated within the Krait processor subsystem as separate +register regions. Add a driver for these PLLs so that we can +provide HFPLL clocks for use by the system. + +Cc: <devicetree@vger.kernel.org> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +.../devicetree/bindings/clock/qcom,hfpll.txt | 40 ++++++++ + drivers/clk/qcom/Kconfig | 8 ++ + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/hfpll.c | 109 +++++++++++++++++++++ + 4 files changed, 158 insertions(+) + create mode 100644 Documentation/devicetree/bindings/clock/qcom,hfpll.txt + create mode 100644 drivers/clk/qcom/hfpll.c + +--- /dev/null ++++ b/Documentation/devicetree/bindings/clock/qcom,hfpll.txt +@@ -0,0 +1,40 @@ ++High-Frequency PLL (HFPLL) ++ ++PROPERTIES ++ ++- compatible: ++ Usage: required ++ Value type: <string> ++ Definition: must be "qcom,hfpll" ++ ++- reg: ++ Usage: required ++ Value type: <prop-encoded-array> ++ Definition: address and size of HPLL registers. An optional second ++ element specifies the address and size of the alias ++ register region. ++ ++- clock-output-names: ++ Usage: required ++ Value type: <string> ++ Definition: Name of the PLL. Typically hfpllX where X is a CPU number ++ starting at 0. Otherwise hfpll_Y where Y is more specific ++ such as "l2". ++ ++Example: ++ ++1) An HFPLL for the L2 cache. ++ ++ clock-controller@f9016000 { ++ compatible = "qcom,hfpll"; ++ reg = <0xf9016000 0x30>; ++ clock-output-names = "hfpll_l2"; ++ }; ++ ++2) An HFPLL for CPU0. This HFPLL has the alias register region. ++ ++ clock-controller@f908a000 { ++ compatible = "qcom,hfpll"; ++ reg = <0xf908a000 0x30>, <0xf900a000 0x30>; ++ clock-output-names = "hfpll0"; ++ }; +--- a/drivers/clk/qcom/Kconfig ++++ b/drivers/clk/qcom/Kconfig +@@ -88,3 +88,11 @@ config MSM_MMCC_8974 + Support for the multimedia clock controller on msm8974 devices. + Say Y if you want to support multimedia devices such as display, + graphics, video encode/decode, camera, etc. ++ ++config QCOM_HFPLL ++ tristate "High-Frequency PLL (HFPLL) Clock Controller" ++ depends on COMMON_CLK_QCOM ++ help ++ Support for the high-frequency PLLs present on Qualcomm devices. ++ Say Y if you want to support CPU frequency scaling on devices ++ such as MSM8974, APQ8084, etc. +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -21,3 +21,4 @@ obj-$(CONFIG_MSM_LCC_8960) += lcc-msm896 + obj-$(CONFIG_MSM_GCC_8974) += gcc-msm8974.o + obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o + obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o ++obj-$(CONFIG_QCOM_HFPLL) += hfpll.o +--- /dev/null ++++ b/drivers/clk/qcom/hfpll.c +@@ -0,0 +1,109 @@ ++/* ++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/of.h> ++#include <linux/clk.h> ++#include <linux/clk-provider.h> ++#include <linux/regmap.h> ++ ++#include "clk-regmap.h" ++#include "clk-hfpll.h" ++ ++static const struct hfpll_data hdata = { ++ .mode_reg = 0x00, ++ .l_reg = 0x04, ++ .m_reg = 0x08, ++ .n_reg = 0x0c, ++ .user_reg = 0x10, ++ .config_reg = 0x14, ++ .config_val = 0x430405d, ++ .status_reg = 0x1c, ++ .lock_bit = 16, ++ ++ .user_val = 0x8, ++ .user_vco_mask = 0x100000, ++ .low_vco_max_rate = 1248000000, ++ .min_rate = 537600000UL, ++ .max_rate = 2900000000UL, ++}; ++ ++static const struct of_device_id qcom_hfpll_match_table[] = { ++ { .compatible = "qcom,hfpll" }, ++ { } ++}; ++MODULE_DEVICE_TABLE(of, qcom_hfpll_match_table); ++ ++static const struct regmap_config hfpll_regmap_config = { ++ .reg_bits = 32, ++ .reg_stride = 4, ++ .val_bits = 32, ++ .max_register = 0x30, ++ .fast_io = true, ++}; ++ ++static int qcom_hfpll_probe(struct platform_device *pdev) ++{ ++ struct clk *clk; ++ struct resource *res; ++ struct device *dev = &pdev->dev; ++ void __iomem *base; ++ struct regmap *regmap; ++ struct clk_hfpll *h; ++ struct clk_init_data init = { ++ .parent_names = (const char *[]){ "xo" }, ++ .num_parents = 1, ++ .ops = &clk_ops_hfpll, ++ }; ++ ++ h = devm_kzalloc(dev, sizeof(*h), GFP_KERNEL); ++ if (!h) ++ return -ENOMEM; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ base = devm_ioremap_resource(dev, res); ++ if (IS_ERR(base)) ++ return PTR_ERR(base); ++ ++ regmap = devm_regmap_init_mmio(&pdev->dev, base, &hfpll_regmap_config); ++ if (IS_ERR(regmap)) ++ return PTR_ERR(regmap); ++ ++ if (of_property_read_string_index(dev->of_node, "clock-output-names", ++ 0, &init.name)) ++ return -ENODEV; ++ ++ h->d = &hdata; ++ h->clkr.hw.init = &init; ++ spin_lock_init(&h->lock); ++ ++ clk = devm_clk_register_regmap(&pdev->dev, &h->clkr); ++ ++ return PTR_ERR_OR_ZERO(clk); ++} ++ ++static struct platform_driver qcom_hfpll_driver = { ++ .probe = qcom_hfpll_probe, ++ .driver = { ++ .name = "qcom-hfpll", ++ .of_match_table = qcom_hfpll_match_table, ++ }, ++}; ++module_platform_driver(qcom_hfpll_driver); ++ ++MODULE_DESCRIPTION("QCOM HFPLL Clock Driver"); ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS("platform:qcom-hfpll"); diff --git a/target/linux/ipq806x/patches-4.0/139-clk-qcom-Add-IPQ806X-s-HFPLLs.patch b/target/linux/ipq806x/patches-4.0/139-clk-qcom-Add-IPQ806X-s-HFPLLs.patch new file mode 100644 index 0000000000..d341006387 --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/139-clk-qcom-Add-IPQ806X-s-HFPLLs.patch @@ -0,0 +1,127 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,08/13] clk: qcom: Add IPQ806X's HFPLLs +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063241 +Message-Id: <1426920332-9340-9-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:27 -0700 + +Describe the HFPLLs present on IPQ806X devices. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +drivers/clk/qcom/gcc-ipq806x.c | 83 ++++++++++++++++++++++++++++++++++++++++++ + 1 file changed, 83 insertions(+) + +--- a/drivers/clk/qcom/gcc-ipq806x.c ++++ b/drivers/clk/qcom/gcc-ipq806x.c +@@ -30,6 +30,7 @@ + #include "clk-pll.h" + #include "clk-rcg.h" + #include "clk-branch.h" ++#include "clk-hfpll.h" + #include "reset.h" + + static struct clk_pll pll0 = { +@@ -113,6 +114,85 @@ static struct clk_regmap pll8_vote = { + }, + }; + ++static struct hfpll_data hfpll0_data = { ++ .mode_reg = 0x3200, ++ .l_reg = 0x3208, ++ .m_reg = 0x320c, ++ .n_reg = 0x3210, ++ .config_reg = 0x3204, ++ .status_reg = 0x321c, ++ .config_val = 0x7845c665, ++ .droop_reg = 0x3214, ++ .droop_val = 0x0108c000, ++ .min_rate = 600000000UL, ++ .max_rate = 1800000000UL, ++}; ++ ++static struct clk_hfpll hfpll0 = { ++ .d = &hfpll0_data, ++ .clkr.hw.init = &(struct clk_init_data){ ++ .parent_names = (const char *[]){ "pxo" }, ++ .num_parents = 1, ++ .name = "hfpll0", ++ .ops = &clk_ops_hfpll, ++ .flags = CLK_IGNORE_UNUSED, ++ }, ++ .lock = __SPIN_LOCK_UNLOCKED(hfpll0.lock), ++}; ++ ++static struct hfpll_data hfpll1_data = { ++ .mode_reg = 0x3240, ++ .l_reg = 0x3248, ++ .m_reg = 0x324c, ++ .n_reg = 0x3250, ++ .config_reg = 0x3244, ++ .status_reg = 0x325c, ++ .config_val = 0x7845c665, ++ .droop_reg = 0x3314, ++ .droop_val = 0x0108c000, ++ .min_rate = 600000000UL, ++ .max_rate = 1800000000UL, ++}; ++ ++static struct clk_hfpll hfpll1 = { ++ .d = &hfpll1_data, ++ .clkr.hw.init = &(struct clk_init_data){ ++ .parent_names = (const char *[]){ "pxo" }, ++ .num_parents = 1, ++ .name = "hfpll1", ++ .ops = &clk_ops_hfpll, ++ .flags = CLK_IGNORE_UNUSED, ++ }, ++ .lock = __SPIN_LOCK_UNLOCKED(hfpll1.lock), ++}; ++ ++static struct hfpll_data hfpll_l2_data = { ++ .mode_reg = 0x3300, ++ .l_reg = 0x3308, ++ .m_reg = 0x330c, ++ .n_reg = 0x3310, ++ .config_reg = 0x3304, ++ .status_reg = 0x331c, ++ .config_val = 0x7845c665, ++ .droop_reg = 0x3314, ++ .droop_val = 0x0108c000, ++ .min_rate = 600000000UL, ++ .max_rate = 1800000000UL, ++}; ++ ++static struct clk_hfpll hfpll_l2 = { ++ .d = &hfpll_l2_data, ++ .clkr.hw.init = &(struct clk_init_data){ ++ .parent_names = (const char *[]){ "pxo" }, ++ .num_parents = 1, ++ .name = "hfpll_l2", ++ .ops = &clk_ops_hfpll, ++ .flags = CLK_IGNORE_UNUSED, ++ }, ++ .lock = __SPIN_LOCK_UNLOCKED(hfpll_l2.lock), ++}; ++ ++ + static struct clk_pll pll14 = { + .l_reg = 0x31c4, + .m_reg = 0x31c8, +@@ -2273,6 +2353,9 @@ static struct clk_regmap *gcc_ipq806x_cl + [USB_FS1_XCVR_SRC] = &usb_fs1_xcvr_clk_src.clkr, + [USB_FS1_XCVR_CLK] = &usb_fs1_xcvr_clk.clkr, + [USB_FS1_SYSTEM_CLK] = &usb_fs1_sys_clk.clkr, ++ [PLL9] = &hfpll0.clkr, ++ [PLL10] = &hfpll1.clkr, ++ [PLL12] = &hfpll_l2.clkr, + }; + + static const struct qcom_reset_map gcc_ipq806x_resets[] = { diff --git a/target/linux/ipq806x/patches-4.0/140-clk-qcom-Add-support-for-Krait-clocks.patch b/target/linux/ipq806x/patches-4.0/140-clk-qcom-Add-support-for-Krait-clocks.patch new file mode 100644 index 0000000000..cef33c8f99 --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/140-clk-qcom-Add-support-for-Krait-clocks.patch @@ -0,0 +1,271 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,09/13] clk: qcom: Add support for Krait clocks +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063251 +Message-Id: <1426920332-9340-10-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org> +Date: Fri, 20 Mar 2015 23:45:28 -0700 + +The Krait clocks are made up of a series of muxes and a divider +that choose between a fixed rate clock and dedicated HFPLLs for +each CPU. Instead of using mmio accesses to remux parents, the +Krait implementation exposes the remux control via cp15 +registers. Support these clocks. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +drivers/clk/qcom/Kconfig | 4 ++ + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/clk-krait.c | 166 +++++++++++++++++++++++++++++++++++++++++++ + drivers/clk/qcom/clk-krait.h | 49 +++++++++++++ + 4 files changed, 220 insertions(+) + create mode 100644 drivers/clk/qcom/clk-krait.c + create mode 100644 drivers/clk/qcom/clk-krait.h + +--- a/drivers/clk/qcom/Kconfig ++++ b/drivers/clk/qcom/Kconfig +@@ -96,3 +96,7 @@ config QCOM_HFPLL + Support for the high-frequency PLLs present on Qualcomm devices. + Say Y if you want to support CPU frequency scaling on devices + such as MSM8974, APQ8084, etc. ++ ++config KRAIT_CLOCKS ++ bool ++ select KRAIT_L2_ACCESSORS +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -8,6 +8,7 @@ clk-qcom-y += clk-rcg2.o + clk-qcom-y += clk-branch.o + clk-qcom-y += clk-regmap-divider.o + clk-qcom-y += clk-regmap-mux.o ++clk-qcom-$(CONFIG_KRAIT_CLOCKS) += clk-krait.o + clk-qcom-y += clk-hfpll.o + clk-qcom-y += reset.o + +--- /dev/null ++++ b/drivers/clk/qcom/clk-krait.c +@@ -0,0 +1,166 @@ ++/* ++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/init.h> ++#include <linux/io.h> ++#include <linux/delay.h> ++#include <linux/err.h> ++#include <linux/clk-provider.h> ++#include <linux/spinlock.h> ++ ++#include <asm/krait-l2-accessors.h> ++ ++#include "clk-krait.h" ++ ++/* Secondary and primary muxes share the same cp15 register */ ++static DEFINE_SPINLOCK(krait_clock_reg_lock); ++ ++#define LPL_SHIFT 8 ++static void __krait_mux_set_sel(struct krait_mux_clk *mux, int sel) ++{ ++ unsigned long flags; ++ u32 regval; ++ ++ spin_lock_irqsave(&krait_clock_reg_lock, flags); ++ regval = krait_get_l2_indirect_reg(mux->offset); ++ regval &= ~(mux->mask << mux->shift); ++ regval |= (sel & mux->mask) << mux->shift; ++ if (mux->lpl) { ++ regval &= ~(mux->mask << (mux->shift + LPL_SHIFT)); ++ regval |= (sel & mux->mask) << (mux->shift + LPL_SHIFT); ++ } ++ krait_set_l2_indirect_reg(mux->offset, regval); ++ spin_unlock_irqrestore(&krait_clock_reg_lock, flags); ++ ++ /* Wait for switch to complete. */ ++ mb(); ++ udelay(1); ++} ++ ++static int krait_mux_set_parent(struct clk_hw *hw, u8 index) ++{ ++ struct krait_mux_clk *mux = to_krait_mux_clk(hw); ++ u32 sel; ++ ++ sel = clk_mux_reindex(index, mux->parent_map, 0); ++ mux->en_mask = sel; ++ /* Don't touch mux if CPU is off as it won't work */ ++ if (__clk_is_enabled(hw->clk)) ++ __krait_mux_set_sel(mux, sel); ++ return 0; ++} ++ ++static u8 krait_mux_get_parent(struct clk_hw *hw) ++{ ++ struct krait_mux_clk *mux = to_krait_mux_clk(hw); ++ u32 sel; ++ ++ sel = krait_get_l2_indirect_reg(mux->offset); ++ sel >>= mux->shift; ++ sel &= mux->mask; ++ mux->en_mask = sel; ++ ++ return clk_mux_get_parent(hw, sel, mux->parent_map, 0); ++} ++ ++static struct clk_hw *krait_mux_get_safe_parent(struct clk_hw *hw) ++{ ++ int i; ++ struct krait_mux_clk *mux = to_krait_mux_clk(hw); ++ int num_parents = __clk_get_num_parents(hw->clk); ++ ++ i = mux->safe_sel; ++ for (i = 0; i < num_parents; i++) ++ if (mux->safe_sel == mux->parent_map[i]) ++ break; ++ ++ return __clk_get_hw(clk_get_parent_by_index(hw->clk, i)); ++} ++ ++static int krait_mux_enable(struct clk_hw *hw) ++{ ++ struct krait_mux_clk *mux = to_krait_mux_clk(hw); ++ ++ __krait_mux_set_sel(mux, mux->en_mask); ++ ++ return 0; ++} ++ ++static void krait_mux_disable(struct clk_hw *hw) ++{ ++ struct krait_mux_clk *mux = to_krait_mux_clk(hw); ++ ++ __krait_mux_set_sel(mux, mux->safe_sel); ++} ++ ++const struct clk_ops krait_mux_clk_ops = { ++ .enable = krait_mux_enable, ++ .disable = krait_mux_disable, ++ .set_parent = krait_mux_set_parent, ++ .get_parent = krait_mux_get_parent, ++ .determine_rate = __clk_mux_determine_rate_closest, ++ .get_safe_parent = krait_mux_get_safe_parent, ++}; ++EXPORT_SYMBOL_GPL(krait_mux_clk_ops); ++ ++/* The divider can divide by 2, 4, 6 and 8. But we only really need div-2. */ ++static long krait_div2_round_rate(struct clk_hw *hw, unsigned long rate, ++ unsigned long *parent_rate) ++{ ++ *parent_rate = __clk_round_rate(__clk_get_parent(hw->clk), rate * 2); ++ return DIV_ROUND_UP(*parent_rate, 2); ++} ++ ++static int krait_div2_set_rate(struct clk_hw *hw, unsigned long rate, ++ unsigned long parent_rate) ++{ ++ struct krait_div2_clk *d = to_krait_div2_clk(hw); ++ unsigned long flags; ++ u32 val; ++ u32 mask = BIT(d->width) - 1; ++ ++ if (d->lpl) ++ mask = mask << (d->shift + LPL_SHIFT) | mask << d->shift; ++ ++ spin_lock_irqsave(&krait_clock_reg_lock, flags); ++ val = krait_get_l2_indirect_reg(d->offset); ++ val &= ~mask; ++ krait_set_l2_indirect_reg(d->offset, val); ++ spin_unlock_irqrestore(&krait_clock_reg_lock, flags); ++ ++ return 0; ++} ++ ++static unsigned long ++krait_div2_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) ++{ ++ struct krait_div2_clk *d = to_krait_div2_clk(hw); ++ u32 mask = BIT(d->width) - 1; ++ u32 div; ++ ++ div = krait_get_l2_indirect_reg(d->offset); ++ div >>= d->shift; ++ div &= mask; ++ div = (div + 1) * 2; ++ ++ return DIV_ROUND_UP(parent_rate, div); ++} ++ ++const struct clk_ops krait_div2_clk_ops = { ++ .round_rate = krait_div2_round_rate, ++ .set_rate = krait_div2_set_rate, ++ .recalc_rate = krait_div2_recalc_rate, ++}; ++EXPORT_SYMBOL_GPL(krait_div2_clk_ops); +--- /dev/null ++++ b/drivers/clk/qcom/clk-krait.h +@@ -0,0 +1,49 @@ ++/* ++ * Copyright (c) 2013, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#ifndef __QCOM_CLK_KRAIT_H ++#define __QCOM_CLK_KRAIT_H ++ ++#include <linux/clk-provider.h> ++ ++struct krait_mux_clk { ++ unsigned int *parent_map; ++ bool has_safe_parent; ++ u8 safe_sel; ++ u32 offset; ++ u32 mask; ++ u32 shift; ++ u32 en_mask; ++ bool lpl; ++ ++ struct clk_hw hw; ++}; ++ ++#define to_krait_mux_clk(_hw) container_of(_hw, struct krait_mux_clk, hw) ++ ++extern const struct clk_ops krait_mux_clk_ops; ++ ++struct krait_div2_clk { ++ u32 offset; ++ u8 width; ++ u32 shift; ++ bool lpl; ++ ++ struct clk_hw hw; ++}; ++ ++#define to_krait_div2_clk(_hw) container_of(_hw, struct krait_div2_clk, hw) ++ ++extern const struct clk_ops krait_div2_clk_ops; ++ ++#endif diff --git a/target/linux/ipq806x/patches-4.0/141-clk-qcom-Add-KPSS-ACC-GCC-driver.patch b/target/linux/ipq806x/patches-4.0/141-clk-qcom-Add-KPSS-ACC-GCC-driver.patch new file mode 100644 index 0000000000..12f24b7565 --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/141-clk-qcom-Add-KPSS-ACC-GCC-driver.patch @@ -0,0 +1,205 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,10/13] clk: qcom: Add KPSS ACC/GCC driver +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063201 +Message-Id: <1426920332-9340-11-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org> +Date: Fri, 20 Mar 2015 23:45:29 -0700 + +The ACC and GCC regions present in KPSSv1 contain registers to +control clocks and power to each Krait CPU and L2. For CPUfreq +purposes probe these devices and expose a mux clock that chooses +between PXO and PLL8. + +Cc: <devicetree@vger.kernel.org> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +.../devicetree/bindings/arm/msm/qcom,kpss-acc.txt | 7 ++ + .../devicetree/bindings/arm/msm/qcom,kpss-gcc.txt | 28 +++++++ + drivers/clk/qcom/Kconfig | 8 ++ + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/kpss-xcc.c | 95 ++++++++++++++++++++++ + 5 files changed, 139 insertions(+) + create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt + create mode 100644 drivers/clk/qcom/kpss-xcc.c + +--- a/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt ++++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt +@@ -21,10 +21,17 @@ PROPERTIES + the register region. An optional second element specifies + the base address and size of the alias register region. + ++- clock-output-names: ++ Usage: optional ++ Value type: <string> ++ Definition: Name of the output clock. Typically acpuX_aux where X is a ++ CPU number starting at 0. ++ + Example: + + clock-controller@2088000 { + compatible = "qcom,kpss-acc-v2"; + reg = <0x02088000 0x1000>, + <0x02008000 0x1000>; ++ clock-output-names = "acpu0_aux"; + }; +--- /dev/null ++++ b/Documentation/devicetree/bindings/arm/msm/qcom,kpss-gcc.txt +@@ -0,0 +1,28 @@ ++Krait Processor Sub-system (KPSS) Global Clock Controller (GCC) ++ ++PROPERTIES ++ ++- compatible: ++ Usage: required ++ Value type: <string> ++ Definition: should be one of: ++ "qcom,kpss-gcc" ++ ++- reg: ++ Usage: required ++ Value type: <prop-encoded-array> ++ Definition: base address and size of the register region ++ ++- clock-output-names: ++ Usage: required ++ Value type: <string> ++ Definition: Name of the output clock. Typically acpu_l2_aux indicating ++ an L2 cache auxiliary clock. ++ ++Example: ++ ++ l2cc: clock-controller@2011000 { ++ compatible = "qcom,kpss-gcc"; ++ reg = <0x2011000 0x1000>; ++ clock-output-names = "acpu_l2_aux"; ++ }; +--- a/drivers/clk/qcom/Kconfig ++++ b/drivers/clk/qcom/Kconfig +@@ -97,6 +97,14 @@ config QCOM_HFPLL + Say Y if you want to support CPU frequency scaling on devices + such as MSM8974, APQ8084, etc. + ++config KPSS_XCC ++ tristate "KPSS Clock Controller" ++ depends on COMMON_CLK_QCOM ++ help ++ Support for the Krait ACC and GCC clock controllers. Say Y ++ if you want to support CPU frequency scaling on devices such ++ as MSM8960, APQ8064, etc. ++ + config KRAIT_CLOCKS + bool + select KRAIT_L2_ACCESSORS +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -22,4 +22,5 @@ obj-$(CONFIG_MSM_LCC_8960) += lcc-msm896 + obj-$(CONFIG_MSM_GCC_8974) += gcc-msm8974.o + obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o + obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o ++obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o + obj-$(CONFIG_QCOM_HFPLL) += hfpll.o +--- /dev/null ++++ b/drivers/clk/qcom/kpss-xcc.c +@@ -0,0 +1,95 @@ ++/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/err.h> ++#include <linux/io.h> ++#include <linux/of.h> ++#include <linux/of_device.h> ++#include <linux/clk.h> ++#include <linux/clk-provider.h> ++ ++static const char *aux_parents[] = { ++ "pll8_vote", ++ "pxo", ++}; ++ ++static unsigned int aux_parent_map[] = { ++ 3, ++ 0, ++}; ++ ++static const struct of_device_id kpss_xcc_match_table[] = { ++ { .compatible = "qcom,kpss-acc-v1", .data = (void *)1UL }, ++ { .compatible = "qcom,kpss-gcc" }, ++ {} ++}; ++MODULE_DEVICE_TABLE(of, kpss_xcc_match_table); ++ ++static int kpss_xcc_driver_probe(struct platform_device *pdev) ++{ ++ const struct of_device_id *id; ++ struct clk *clk; ++ struct resource *res; ++ void __iomem *base; ++ const char *name; ++ ++ id = of_match_device(kpss_xcc_match_table, &pdev->dev); ++ if (!id) ++ return -ENODEV; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ base = devm_ioremap_resource(&pdev->dev, res); ++ if (IS_ERR(base)) ++ return PTR_ERR(base); ++ ++ if (id->data) { ++ if (of_property_read_string_index(pdev->dev.of_node, ++ "clock-output-names", 0, &name)) ++ return -ENODEV; ++ base += 0x14; ++ } else { ++ name = "acpu_l2_aux"; ++ base += 0x28; ++ } ++ ++ clk = clk_register_mux_table(&pdev->dev, name, aux_parents, ++ ARRAY_SIZE(aux_parents), 0, base, 0, 0x3, ++ 0, aux_parent_map, NULL); ++ ++ platform_set_drvdata(pdev, clk); ++ ++ return PTR_ERR_OR_ZERO(clk); ++} ++ ++static int kpss_xcc_driver_remove(struct platform_device *pdev) ++{ ++ clk_unregister_mux(platform_get_drvdata(pdev)); ++ return 0; ++} ++ ++static struct platform_driver kpss_xcc_driver = { ++ .probe = kpss_xcc_driver_probe, ++ .remove = kpss_xcc_driver_remove, ++ .driver = { ++ .name = "kpss-xcc", ++ .of_match_table = kpss_xcc_match_table, ++ }, ++}; ++module_platform_driver(kpss_xcc_driver); ++ ++MODULE_DESCRIPTION("Krait Processor Sub System (KPSS) Clock Driver"); ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS("platform:kpss-xcc"); diff --git a/target/linux/ipq806x/patches-4.0/142-clk-qcom-Add-Krait-clock-controller-driver.patch b/target/linux/ipq806x/patches-4.0/142-clk-qcom-Add-Krait-clock-controller-driver.patch new file mode 100644 index 0000000000..159facdb9a --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/142-clk-qcom-Add-Krait-clock-controller-driver.patch @@ -0,0 +1,435 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,11/13] clk: qcom: Add Krait clock controller driver +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063121 +Message-Id: <1426920332-9340-12-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org> +Date: Fri, 20 Mar 2015 23:45:30 -0700 + +The Krait CPU clocks are made up of a primary mux and secondary +mux for each CPU and the L2, controlled via cp15 accessors. For +Kraits within KPSSv1 each secondary mux accepts a different aux +source, but on KPSSv2 each secondary mux accepts the same aux +source. + +Cc: <devicetree@vger.kernel.org> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +.../devicetree/bindings/clock/qcom,krait-cc.txt | 22 ++ + drivers/clk/qcom/Kconfig | 8 + + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/krait-cc.c | 352 +++++++++++++++++++++ + 4 files changed, 383 insertions(+) + create mode 100644 Documentation/devicetree/bindings/clock/qcom,krait-cc.txt + create mode 100644 drivers/clk/qcom/krait-cc.c + +--- /dev/null ++++ b/Documentation/devicetree/bindings/clock/qcom,krait-cc.txt +@@ -0,0 +1,22 @@ ++Krait Clock Controller ++ ++PROPERTIES ++ ++- compatible: ++ Usage: required ++ Value type: <string> ++ Definition: must be one of: ++ "qcom,krait-cc-v1" ++ "qcom,krait-cc-v2" ++ ++- #clock-cells: ++ Usage: required ++ Value type: <u32> ++ Definition: must be 1 ++ ++Example: ++ ++ kraitcc: clock-controller { ++ compatible = "qcom,krait-cc-v1"; ++ #clock-cells = <1>; ++ }; +--- a/drivers/clk/qcom/Kconfig ++++ b/drivers/clk/qcom/Kconfig +@@ -105,6 +105,14 @@ config KPSS_XCC + if you want to support CPU frequency scaling on devices such + as MSM8960, APQ8064, etc. + ++config KRAITCC ++ tristate "Krait Clock Controller" ++ depends on COMMON_CLK_QCOM && ARM ++ select KRAIT_CLOCKS ++ help ++ Support for the Krait CPU clocks on Qualcomm devices. ++ Say Y if you want to support CPU frequency scaling. ++ + config KRAIT_CLOCKS + bool + select KRAIT_L2_ACCESSORS +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -24,3 +24,4 @@ obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8 + obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o + obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o + obj-$(CONFIG_QCOM_HFPLL) += hfpll.o ++obj-$(CONFIG_KRAITCC) += krait-cc.o +--- /dev/null ++++ b/drivers/clk/qcom/krait-cc.c +@@ -0,0 +1,352 @@ ++/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/err.h> ++#include <linux/io.h> ++#include <linux/of.h> ++#include <linux/of_device.h> ++#include <linux/clk.h> ++#include <linux/clk-provider.h> ++#include <linux/slab.h> ++ ++#include "clk-krait.h" ++ ++static unsigned int sec_mux_map[] = { ++ 2, ++ 0, ++}; ++ ++static unsigned int pri_mux_map[] = { ++ 1, ++ 2, ++ 0, ++}; ++ ++static int ++krait_add_div(struct device *dev, int id, const char *s, unsigned offset) ++{ ++ struct krait_div2_clk *div; ++ struct clk_init_data init = { ++ .num_parents = 1, ++ .ops = &krait_div2_clk_ops, ++ .flags = CLK_SET_RATE_PARENT, ++ }; ++ const char *p_names[1]; ++ struct clk *clk; ++ ++ div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL); ++ if (!div) ++ return -ENOMEM; ++ ++ div->width = 2; ++ div->shift = 6; ++ div->lpl = id >= 0; ++ div->offset = offset; ++ div->hw.init = &init; ++ ++ init.name = kasprintf(GFP_KERNEL, "hfpll%s_div", s); ++ if (!init.name) ++ return -ENOMEM; ++ ++ init.parent_names = p_names; ++ p_names[0] = kasprintf(GFP_KERNEL, "hfpll%s", s); ++ if (!p_names[0]) { ++ kfree(init.name); ++ return -ENOMEM; ++ } ++ ++ clk = devm_clk_register(dev, &div->hw); ++ kfree(p_names[0]); ++ kfree(init.name); ++ ++ return PTR_ERR_OR_ZERO(clk); ++} ++ ++static int ++krait_add_sec_mux(struct device *dev, int id, const char *s, unsigned offset, ++ bool unique_aux) ++{ ++ struct krait_mux_clk *mux; ++ static const char *sec_mux_list[] = { ++ "acpu_aux", ++ "qsb", ++ }; ++ struct clk_init_data init = { ++ .parent_names = sec_mux_list, ++ .num_parents = ARRAY_SIZE(sec_mux_list), ++ .ops = &krait_mux_clk_ops, ++ .flags = CLK_SET_RATE_PARENT, ++ }; ++ struct clk *clk; ++ ++ mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL); ++ if (!mux) ++ return -ENOMEM; ++ ++ mux->offset = offset; ++ mux->lpl = id >= 0; ++ mux->has_safe_parent = true; ++ mux->safe_sel = 2; ++ mux->mask = 0x3; ++ mux->shift = 2; ++ mux->parent_map = sec_mux_map; ++ mux->hw.init = &init; ++ ++ init.name = kasprintf(GFP_KERNEL, "krait%s_sec_mux", s); ++ if (!init.name) ++ return -ENOMEM; ++ ++ if (unique_aux) { ++ sec_mux_list[0] = kasprintf(GFP_KERNEL, "acpu%s_aux", s); ++ if (!sec_mux_list[0]) { ++ clk = ERR_PTR(-ENOMEM); ++ goto err_aux; ++ } ++ } ++ ++ clk = devm_clk_register(dev, &mux->hw); ++ ++ if (unique_aux) ++ kfree(sec_mux_list[0]); ++err_aux: ++ kfree(init.name); ++ return PTR_ERR_OR_ZERO(clk); ++} ++ ++static struct clk * ++krait_add_pri_mux(struct device *dev, int id, const char *s, unsigned offset) ++{ ++ struct krait_mux_clk *mux; ++ const char *p_names[3]; ++ struct clk_init_data init = { ++ .parent_names = p_names, ++ .num_parents = ARRAY_SIZE(p_names), ++ .ops = &krait_mux_clk_ops, ++ .flags = CLK_SET_RATE_PARENT, ++ }; ++ struct clk *clk; ++ ++ mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL); ++ if (!mux) ++ return ERR_PTR(-ENOMEM); ++ ++ mux->has_safe_parent = true; ++ mux->safe_sel = 0; ++ mux->mask = 0x3; ++ mux->shift = 0; ++ mux->offset = offset; ++ mux->lpl = id >= 0; ++ mux->parent_map = pri_mux_map; ++ mux->hw.init = &init; ++ ++ init.name = kasprintf(GFP_KERNEL, "krait%s_pri_mux", s); ++ if (!init.name) ++ return ERR_PTR(-ENOMEM); ++ ++ p_names[0] = kasprintf(GFP_KERNEL, "hfpll%s", s); ++ if (!p_names[0]) { ++ clk = ERR_PTR(-ENOMEM); ++ goto err_p0; ++ } ++ ++ p_names[1] = kasprintf(GFP_KERNEL, "hfpll%s_div", s); ++ if (!p_names[1]) { ++ clk = ERR_PTR(-ENOMEM); ++ goto err_p1; ++ } ++ ++ p_names[2] = kasprintf(GFP_KERNEL, "krait%s_sec_mux", s); ++ if (!p_names[2]) { ++ clk = ERR_PTR(-ENOMEM); ++ goto err_p2; ++ } ++ ++ clk = devm_clk_register(dev, &mux->hw); ++ ++ kfree(p_names[2]); ++err_p2: ++ kfree(p_names[1]); ++err_p1: ++ kfree(p_names[0]); ++err_p0: ++ kfree(init.name); ++ return clk; ++} ++ ++/* id < 0 for L2, otherwise id == physical CPU number */ ++static struct clk *krait_add_clks(struct device *dev, int id, bool unique_aux) ++{ ++ int ret; ++ unsigned offset; ++ void *p = NULL; ++ const char *s; ++ struct clk *clk; ++ ++ if (id >= 0) { ++ offset = 0x4501 + (0x1000 * id); ++ s = p = kasprintf(GFP_KERNEL, "%d", id); ++ if (!s) ++ return ERR_PTR(-ENOMEM); ++ } else { ++ offset = 0x500; ++ s = "_l2"; ++ } ++ ++ ret = krait_add_div(dev, id, s, offset); ++ if (ret) { ++ clk = ERR_PTR(ret); ++ goto err; ++ } ++ ++ ret = krait_add_sec_mux(dev, id, s, offset, unique_aux); ++ if (ret) { ++ clk = ERR_PTR(ret); ++ goto err; ++ } ++ ++ clk = krait_add_pri_mux(dev, id, s, offset); ++err: ++ kfree(p); ++ return clk; ++} ++ ++static struct clk *krait_of_get(struct of_phandle_args *clkspec, void *data) ++{ ++ unsigned int idx = clkspec->args[0]; ++ struct clk **clks = data; ++ ++ if (idx >= 5) { ++ pr_err("%s: invalid clock index %d\n", __func__, idx); ++ return ERR_PTR(-EINVAL); ++ } ++ ++ return clks[idx] ? : ERR_PTR(-ENODEV); ++} ++ ++static const struct of_device_id krait_cc_match_table[] = { ++ { .compatible = "qcom,krait-cc-v1", (void *)1UL }, ++ { .compatible = "qcom,krait-cc-v2" }, ++ {} ++}; ++MODULE_DEVICE_TABLE(of, krait_cc_match_table); ++ ++static int krait_cc_probe(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ const struct of_device_id *id; ++ unsigned long cur_rate, aux_rate; ++ int cpu; ++ struct clk *clk; ++ struct clk **clks; ++ struct clk *l2_pri_mux_clk; ++ ++ id = of_match_device(krait_cc_match_table, dev); ++ if (!id) ++ return -ENODEV; ++ ++ /* Rate is 1 because 0 causes problems for __clk_mux_determine_rate */ ++ clk = clk_register_fixed_rate(dev, "qsb", NULL, CLK_IS_ROOT, 1); ++ if (IS_ERR(clk)) ++ return PTR_ERR(clk); ++ ++ if (!id->data) { ++ clk = clk_register_fixed_factor(dev, "acpu_aux", ++ "gpll0_vote", 0, 1, 2); ++ if (IS_ERR(clk)) ++ return PTR_ERR(clk); ++ } ++ ++ /* Krait configurations have at most 4 CPUs and one L2 */ ++ clks = devm_kcalloc(dev, 5, sizeof(*clks), GFP_KERNEL); ++ if (!clks) ++ return -ENOMEM; ++ ++ for_each_possible_cpu(cpu) { ++ clk = krait_add_clks(dev, cpu, id->data); ++ if (IS_ERR(clk)) ++ return PTR_ERR(clk); ++ clks[cpu] = clk; ++ } ++ ++ l2_pri_mux_clk = krait_add_clks(dev, -1, id->data); ++ if (IS_ERR(l2_pri_mux_clk)) ++ return PTR_ERR(l2_pri_mux_clk); ++ clks[4] = l2_pri_mux_clk; ++ ++ /* ++ * We don't want the CPU or L2 clocks to be turned off at late init ++ * if CPUFREQ or HOTPLUG configs are disabled. So, bump up the ++ * refcount of these clocks. Any cpufreq/hotplug manager can assume ++ * that the clocks have already been prepared and enabled by the time ++ * they take over. ++ */ ++ for_each_online_cpu(cpu) { ++ clk_prepare_enable(l2_pri_mux_clk); ++ WARN(clk_prepare_enable(clks[cpu]), ++ "Unable to turn on CPU%d clock", cpu); ++ } ++ ++ /* ++ * Force reinit of HFPLLs and muxes to overwrite any potential ++ * incorrect configuration of HFPLLs and muxes by the bootloader. ++ * While at it, also make sure the cores are running at known rates ++ * and print the current rate. ++ * ++ * The clocks are set to aux clock rate first to make sure the ++ * secondary mux is not sourcing off of QSB. The rate is then set to ++ * two different rates to force a HFPLL reinit under all ++ * circumstances. ++ */ ++ cur_rate = clk_get_rate(l2_pri_mux_clk); ++ aux_rate = 384000000; ++ if (cur_rate == 1) { ++ pr_info("L2 @ QSB rate. Forcing new rate.\n"); ++ cur_rate = aux_rate; ++ } ++ clk_set_rate(l2_pri_mux_clk, aux_rate); ++ clk_set_rate(l2_pri_mux_clk, 2); ++ clk_set_rate(l2_pri_mux_clk, cur_rate); ++ pr_info("L2 @ %lu KHz\n", clk_get_rate(l2_pri_mux_clk) / 1000); ++ for_each_possible_cpu(cpu) { ++ clk = clks[cpu]; ++ cur_rate = clk_get_rate(clk); ++ if (cur_rate == 1) { ++ pr_info("CPU%d @ QSB rate. Forcing new rate.\n", cpu); ++ cur_rate = aux_rate; ++ } ++ clk_set_rate(clk, aux_rate); ++ clk_set_rate(clk, 2); ++ clk_set_rate(clk, cur_rate); ++ pr_info("CPU%d @ %lu KHz\n", cpu, clk_get_rate(clk) / 1000); ++ } ++ ++ of_clk_add_provider(dev->of_node, krait_of_get, clks); ++ ++ return 0; ++} ++ ++static struct platform_driver krait_cc_driver = { ++ .probe = krait_cc_probe, ++ .driver = { ++ .name = "krait-cc", ++ .of_match_table = krait_cc_match_table, ++ }, ++}; ++module_platform_driver(krait_cc_driver); ++ ++MODULE_DESCRIPTION("Krait CPU Clock Driver"); ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS("platform:krait-cc"); diff --git a/target/linux/ipq806x/patches-4.0/143-cpufreq-Add-module-to-register-cpufreq-on-Krait-CPUs.patch b/target/linux/ipq806x/patches-4.0/143-cpufreq-Add-module-to-register-cpufreq-on-Krait-CPUs.patch new file mode 100644 index 0000000000..57d4afe3a5 --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/143-cpufreq-Add-module-to-register-cpufreq-on-Krait-CPUs.patch @@ -0,0 +1,304 @@ +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v3,12/13] cpufreq: Add module to register cpufreq on Krait CPUs +From: Stephen Boyd <sboyd@codeaurora.org> +X-Patchwork-Id: 6063191 +Message-Id: <1426920332-9340-13-git-send-email-sboyd@codeaurora.org> +To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org> +Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, + linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, + Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org> +Date: Fri, 20 Mar 2015 23:45:31 -0700 + +Register a cpufreq-generic device whenever we detect that a +"qcom,krait" compatible CPU is present in DT. + +Cc: <devicetree@vger.kernel.org> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- +.../devicetree/bindings/arm/msm/qcom,pvs.txt | 38 ++++ + drivers/cpufreq/Kconfig.arm | 9 + + drivers/cpufreq/Makefile | 1 + + drivers/cpufreq/qcom-cpufreq.c | 204 +++++++++++++++++++++ + 4 files changed, 252 insertions(+) + create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,pvs.txt + create mode 100644 drivers/cpufreq/qcom-cpufreq.c + +--- /dev/null ++++ b/Documentation/devicetree/bindings/arm/msm/qcom,pvs.txt +@@ -0,0 +1,38 @@ ++Qualcomm Process Voltage Scaling Tables ++ ++The node name is required to be "qcom,pvs". There shall only be one ++such node present in the root of the tree. ++ ++PROPERTIES ++ ++- qcom,pvs-format-a or qcom,pvs-format-b: ++ Usage: required ++ Value type: <empty> ++ Definition: Indicates the format of qcom,speedX-pvsY-bin-vZ properties. ++ If qcom,pvs-format-a is used the table is two columns ++ (frequency and voltage in that order). If qcom,pvs-format-b is used the table is three columns (frequency, voltage, ++ and current in that order). ++ ++- qcom,speedX-pvsY-bin-vZ: ++ Usage: required ++ Value type: <prop-encoded-array> ++ Definition: The PVS table corresponding to the speed bin X, pvs bin Y, ++ and version Z. ++Example: ++ ++ qcom,pvs { ++ qcom,pvs-format-a; ++ qcom,speed0-pvs0-bin-v0 = ++ < 384000000 950000 >, ++ < 486000000 975000 >, ++ < 594000000 1000000 >, ++ < 702000000 1025000 >, ++ < 810000000 1075000 >, ++ < 918000000 1100000 >, ++ < 1026000000 1125000 >, ++ < 1134000000 1175000 >, ++ < 1242000000 1200000 >, ++ < 1350000000 1225000 >, ++ < 1458000000 1237500 >, ++ < 1512000000 1250000 >; ++ }; +--- a/drivers/cpufreq/Kconfig.arm ++++ b/drivers/cpufreq/Kconfig.arm +@@ -137,6 +137,15 @@ config ARM_OMAP2PLUS_CPUFREQ + depends on ARCH_OMAP2PLUS + default ARCH_OMAP2PLUS + ++config ARM_QCOM_CPUFREQ ++ tristate "Qualcomm based" ++ depends on ARCH_QCOM ++ select PM_OPP ++ help ++ This adds the CPUFreq driver for Qualcomm SoC based boards. ++ ++ If in doubt, say N. ++ + config ARM_S3C_CPUFREQ + bool + help +--- a/drivers/cpufreq/Makefile ++++ b/drivers/cpufreq/Makefile +@@ -65,6 +65,7 @@ obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ) += ki + obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ) += omap-cpufreq.o + obj-$(CONFIG_ARM_PXA2xx_CPUFREQ) += pxa2xx-cpufreq.o + obj-$(CONFIG_PXA3xx) += pxa3xx-cpufreq.o ++obj-$(CONFIG_ARM_QCOM_CPUFREQ) += qcom-cpufreq.o + obj-$(CONFIG_ARM_S3C24XX_CPUFREQ) += s3c24xx-cpufreq.o + obj-$(CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS) += s3c24xx-cpufreq-debugfs.o + obj-$(CONFIG_ARM_S3C2410_CPUFREQ) += s3c2410-cpufreq.o +--- /dev/null ++++ b/drivers/cpufreq/qcom-cpufreq.c +@@ -0,0 +1,204 @@ ++/* Copyright (c) 2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/cpu.h> ++#include <linux/err.h> ++#include <linux/init.h> ++#include <linux/io.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/platform_device.h> ++#include <linux/pm_opp.h> ++#include <linux/slab.h> ++#include <linux/cpufreq-dt.h> ++ ++static void __init get_krait_bin_format_a(int *speed, int *pvs, int *pvs_ver) ++{ ++ void __iomem *base; ++ u32 pte_efuse; ++ ++ *speed = *pvs = *pvs_ver = 0; ++ ++ base = ioremap(0x007000c0, 4); ++ if (!base) { ++ pr_warn("Unable to read efuse data. Defaulting to 0!\n"); ++ return; ++ } ++ ++ pte_efuse = readl_relaxed(base); ++ iounmap(base); ++ ++ *speed = pte_efuse & 0xf; ++ if (*speed == 0xf) ++ *speed = (pte_efuse >> 4) & 0xf; ++ ++ if (*speed == 0xf) { ++ *speed = 0; ++ pr_warn("Speed bin: Defaulting to %d\n", *speed); ++ } else { ++ pr_info("Speed bin: %d\n", *speed); ++ } ++ ++ *pvs = (pte_efuse >> 10) & 0x7; ++ if (*pvs == 0x7) ++ *pvs = (pte_efuse >> 13) & 0x7; ++ ++ if (*pvs == 0x7) { ++ *pvs = 0; ++ pr_warn("PVS bin: Defaulting to %d\n", *pvs); ++ } else { ++ pr_info("PVS bin: %d\n", *pvs); ++ } ++} ++ ++static void __init get_krait_bin_format_b(int *speed, int *pvs, int *pvs_ver) ++{ ++ u32 pte_efuse, redundant_sel; ++ void __iomem *base; ++ ++ *speed = 0; ++ *pvs = 0; ++ *pvs_ver = 0; ++ ++ base = ioremap(0xfc4b80b0, 8); ++ if (!base) { ++ pr_warn("Unable to read efuse data. Defaulting to 0!\n"); ++ return; ++ } ++ ++ pte_efuse = readl_relaxed(base); ++ redundant_sel = (pte_efuse >> 24) & 0x7; ++ *speed = pte_efuse & 0x7; ++ /* 4 bits of PVS are in efuse register bits 31, 8-6. */ ++ *pvs = ((pte_efuse >> 28) & 0x8) | ((pte_efuse >> 6) & 0x7); ++ *pvs_ver = (pte_efuse >> 4) & 0x3; ++ ++ switch (redundant_sel) { ++ case 1: ++ *speed = (pte_efuse >> 27) & 0xf; ++ break; ++ case 2: ++ *pvs = (pte_efuse >> 27) & 0xf; ++ break; ++ } ++ ++ /* Check SPEED_BIN_BLOW_STATUS */ ++ if (pte_efuse & BIT(3)) { ++ pr_info("Speed bin: %d\n", *speed); ++ } else { ++ pr_warn("Speed bin not set. Defaulting to 0!\n"); ++ *speed = 0; ++ } ++ ++ /* Check PVS_BLOW_STATUS */ ++ pte_efuse = readl_relaxed(base + 0x4) & BIT(21); ++ if (pte_efuse) { ++ pr_info("PVS bin: %d\n", *pvs); ++ } else { ++ pr_warn("PVS bin not set. Defaulting to 0!\n"); ++ *pvs = 0; ++ } ++ ++ pr_info("PVS version: %d\n", *pvs_ver); ++ iounmap(base); ++} ++ ++static int __init qcom_cpufreq_populate_opps(void) ++{ ++ int len, rows, cols, i, k, speed, pvs, pvs_ver; ++ char table_name[] = "qcom,speedXX-pvsXX-bin-vXX"; ++ struct device_node *np; ++ struct device *dev; ++ int cpu = 0; ++ ++ np = of_find_node_by_name(NULL, "qcom,pvs"); ++ if (!np) ++ return -ENODEV; ++ ++ if (of_property_read_bool(np, "qcom,pvs-format-a")) { ++ get_krait_bin_format_a(&speed, &pvs, &pvs_ver); ++ cols = 2; ++ } else if (of_property_read_bool(np, "qcom,pvs-format-b")) { ++ get_krait_bin_format_b(&speed, &pvs, &pvs_ver); ++ cols = 3; ++ } else { ++ return -ENODEV; ++ } ++ ++ snprintf(table_name, sizeof(table_name), ++ "qcom,speed%d-pvs%d-bin-v%d", speed, pvs, pvs_ver); ++ ++ if (!of_find_property(np, table_name, &len)) ++ return -EINVAL; ++ ++ len /= sizeof(u32); ++ if (len % cols || len == 0) ++ return -EINVAL; ++ ++ rows = len / cols; ++ ++ for (i = 0, k = 0; i < rows; i++) { ++ u32 freq, volt; ++ ++ of_property_read_u32_index(np, table_name, k++, &freq); ++ of_property_read_u32_index(np, table_name, k++, &volt); ++ while (k % cols) ++ k++; /* Skip uA entries if present */ ++ for (cpu = 0; cpu < num_possible_cpus(); cpu++) { ++ dev = get_cpu_device(cpu); ++ if (!dev) ++ return -ENODEV; ++ if (dev_pm_opp_add(dev, freq, volt)) ++ pr_warn("failed to add OPP %u\n", freq); ++ } ++ } ++ ++ return 0; ++} ++ ++static int __init qcom_cpufreq_driver_init(void) ++{ ++ struct cpufreq_dt_platform_data pdata = { .independent_clocks = true }; ++ struct platform_device_info devinfo = { ++ .name = "cpufreq-dt", ++ .data = &pdata, ++ .size_data = sizeof(pdata), ++ }; ++ struct device *cpu_dev; ++ struct device_node *np; ++ int ret; ++ ++ cpu_dev = get_cpu_device(0); ++ if (!cpu_dev) ++ return -ENODEV; ++ ++ np = of_node_get(cpu_dev->of_node); ++ if (!np) ++ return -ENOENT; ++ ++ if (!of_device_is_compatible(np, "qcom,krait")) { ++ of_node_put(np); ++ return -ENODEV; ++ } ++ of_node_put(np); ++ ++ ret = qcom_cpufreq_populate_opps(); ++ if (ret) ++ return ret; ++ ++ return PTR_ERR_OR_ZERO(platform_device_register_full(&devinfo)); ++} ++module_init(qcom_cpufreq_driver_init); ++ ++MODULE_DESCRIPTION("Qualcomm CPUfreq driver"); ++MODULE_LICENSE("GPL v2"); diff --git a/target/linux/ipq806x/patches-4.0/144-ARM-dts-qcom-Add-necessary-DT-data-for-Krait-cpufreq.patch b/target/linux/ipq806x/patches-4.0/144-ARM-dts-qcom-Add-necessary-DT-data-for-Krait-cpufreq.patch new file mode 100644 index 0000000000..9f8d8cb7e8 --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/144-ARM-dts-qcom-Add-necessary-DT-data-for-Krait-cpufreq.patch @@ -0,0 +1,100 @@ +--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi ++++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi +@@ -23,6 +23,11 @@ + next-level-cache = <&L2>; + qcom,acc = <&acc0>; + qcom,saw = <&saw0>; ++ clocks = <&kraitcc 0>; ++ clock-names = "cpu"; ++ clock-latency = <100000>; ++ core-supply = <&smb208_s2a>; ++ voltage-tolerance = <5>; + }; + + cpu@1 { +@@ -33,11 +38,24 @@ + next-level-cache = <&L2>; + qcom,acc = <&acc1>; + qcom,saw = <&saw1>; ++ clocks = <&kraitcc 1>; ++ clock-names = "cpu"; ++ clock-latency = <100000>; ++ core-supply = <&smb208_s2b>; + }; + + L2: l2-cache { + compatible = "cache"; + cache-level = <2>; ++ clocks = <&kraitcc 4>; ++ clock-names = "cache"; ++ cache-points-kHz = < ++ /* kHz uV CPU kHz */ ++ 1200000 1150000 1200000 ++ 1000000 1100000 600000 ++ 384000 1100000 384000 ++ >; ++ vdd_dig-supply = <&smb208_s1a>; + }; + }; + +@@ -70,6 +88,46 @@ + }; + }; + ++ kraitcc: clock-controller { ++ compatible = "qcom,krait-cc-v1"; ++ #clock-cells = <1>; ++ }; ++ ++ qcom,pvs { ++ qcom,pvs-format-a; ++ qcom,speed0-pvs0-bin-v0 = ++ < 1400000000 1250000 >, ++ < 1200000000 1200000 >, ++ < 1000000000 1150000 >, ++ < 800000000 1100000 >, ++ < 600000000 1050000 >, ++ < 384000000 1000000 >; ++ ++ qcom,speed0-pvs1-bin-v0 = ++ < 1400000000 1175000 >, ++ < 1200000000 1125000 >, ++ < 1000000000 1075000 >, ++ < 800000000 1025000 >, ++ < 600000000 975000 >, ++ < 384000000 925000 >; ++ ++ qcom,speed0-pvs2-bin-v0 = ++ < 1400000000 1125000 >, ++ < 1200000000 1075000 >, ++ < 1000000000 1025000 >, ++ < 800000000 995000 >, ++ < 600000000 925000 >, ++ < 384000000 875000 >; ++ ++ qcom,speed0-pvs3-bin-v0 = ++ < 1400000000 1050000 >, ++ < 1200000000 1000000 >, ++ < 1000000000 950000 >, ++ < 800000000 900000 >, ++ < 600000000 850000 >, ++ < 384000000 800000 >; ++ }; ++ + soc: soc { + #address-cells = <1>; + #size-cells = <1>; +@@ -170,11 +228,13 @@ + acc0: clock-controller@2088000 { + compatible = "qcom,kpss-acc-v1"; + reg = <0x02088000 0x1000>, <0x02008000 0x1000>; ++ clock-output-names = "acpu0_aux"; + }; + + acc1: clock-controller@2098000 { + compatible = "qcom,kpss-acc-v1"; + reg = <0x02098000 0x1000>, <0x02008000 0x1000>; ++ clock-output-names = "acpu1_aux"; + }; + + l2cc: clock-controller@2011000 { diff --git a/target/linux/ipq806x/patches-4.0/145-cpufreq-Add-a-cpufreq-krait-based-on-cpufre.patch b/target/linux/ipq806x/patches-4.0/145-cpufreq-Add-a-cpufreq-krait-based-on-cpufre.patch new file mode 100644 index 0000000000..521adc5c1e --- /dev/null +++ b/target/linux/ipq806x/patches-4.0/145-cpufreq-Add-a-cpufreq-krait-based-on-cpufre.patch @@ -0,0 +1,461 @@ +From dd77db4143290689d3a5e1ec61627233d0711b66 Mon Sep 17 00:00:00 2001 +From: Stephen Boyd <sboyd@codeaurora.org> +Date: Fri, 30 May 2014 16:36:11 -0700 +Subject: [PATCH] FROMLIST: cpufreq: Add a cpufreq-krait based on cpufreq-cpu0 + +Krait processors have individual clocks for each CPU that can +scale independently from one another. cpufreq-cpu0 is fairly +close to this, but assumes that there is only one clock for all +CPUs. Add a driver to support the Krait configuration. + +TODO: Merge into cpufreq-cpu0? Or make generic? + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> + +--- + drivers/cpufreq/Kconfig | 13 +++ + drivers/cpufreq/Makefile | 1 + + drivers/cpufreq/cpufreq-krait.c | 190 ++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 204 insertions(+) + create mode 100644 drivers/cpufreq/cpufreq-krait.c + +--- a/drivers/cpufreq/Kconfig ++++ b/drivers/cpufreq/Kconfig +@@ -198,6 +198,19 @@ config CPUFREQ_DT + + If in doubt, say N. + ++config GENERIC_CPUFREQ_KRAIT ++ tristate "Krait cpufreq driver" ++ depends on HAVE_CLK && OF ++ # if CPU_THERMAL is on and THERMAL=m, CPU0 cannot be =y: ++ depends on !CPU_THERMAL || THERMAL ++ select PM_OPP ++ help ++ This adds a generic cpufreq driver for CPU0 frequency management. ++ It supports both uniprocessor (UP) and symmetric multiprocessor (SMP) ++ systems which share clock and voltage across all CPUs. ++ ++ If in doubt, say N. ++ + if X86 + source "drivers/cpufreq/Kconfig.x86" + endif +--- a/drivers/cpufreq/Makefile ++++ b/drivers/cpufreq/Makefile +@@ -14,6 +14,7 @@ obj-$(CONFIG_CPU_FREQ_GOV_CONSERVATIVE) + obj-$(CONFIG_CPU_FREQ_GOV_COMMON) += cpufreq_governor.o + + obj-$(CONFIG_CPUFREQ_DT) += cpufreq-dt.o ++obj-$(CONFIG_GENERIC_CPUFREQ_KRAIT) += cpufreq-krait.o + + ################################################################################## + # x86 drivers. +--- /dev/null ++++ b/drivers/cpufreq/cpufreq-krait.c +@@ -0,0 +1,390 @@ ++/* ++ * Copyright (C) 2012 Freescale Semiconductor, Inc. ++ * Copyright (c) 2014, The Linux Foundation. All rights reserved. ++ * ++ * The OPP code in function krait_set_target() is reused from ++ * drivers/cpufreq/omap-cpufreq.c ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#include <linux/clk.h> ++#include <linux/cpu.h> ++#include <linux/cpu_cooling.h> ++#include <linux/cpufreq.h> ++#include <linux/cpumask.h> ++#include <linux/err.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/pm_opp.h> ++#include <linux/platform_device.h> ++#include <linux/regulator/consumer.h> ++#include <linux/slab.h> ++#include <linux/thermal.h> ++ ++static unsigned int transition_latency; ++static unsigned int voltage_tolerance; /* in percentage */ ++ ++static struct device *cpu_dev; ++static DEFINE_PER_CPU(struct clk *, krait_cpu_clks); ++static DEFINE_PER_CPU(struct regulator *, krait_supply_core); ++static struct cpufreq_frequency_table *freq_table; ++static struct thermal_cooling_device *cdev; ++ ++struct cache_points { ++ unsigned long cache_freq; ++ unsigned int cache_volt; ++ unsigned long cpu_freq; ++}; ++ ++static struct regulator *krait_l2_reg; ++static struct clk *krait_l2_clk; ++static struct cache_points *krait_l2_points; ++static int nr_krait_l2_points; ++ ++static int krait_parse_cache_points(struct device *dev, ++ struct device_node *of_node) ++{ ++ const struct property *prop; ++ const __be32 *val; ++ int nr, i; ++ ++ prop = of_find_property(of_node, "cache-points-kHz", NULL); ++ if (!prop) ++ return -ENODEV; ++ if (!prop->value) ++ return -ENODATA; ++ ++ /* ++ * Each OPP is a set of tuples consisting of frequency and ++ * cpu-frequency like <freq-kHz volt-uV freq-kHz>. ++ */ ++ nr = prop->length / sizeof(u32); ++ if (nr % 3) { ++ dev_err(dev, "%s: Invalid cache points\n", __func__); ++ return -EINVAL; ++ } ++ nr /= 3; ++ ++ krait_l2_points = devm_kcalloc(dev, nr, sizeof(*krait_l2_points), ++ GFP_KERNEL); ++ if (!krait_l2_points) ++ return -ENOMEM; ++ nr_krait_l2_points = nr; ++ ++ for (i = 0, val = prop->value; i < nr; i++) { ++ unsigned long cache_freq = be32_to_cpup(val++) * 1000; ++ unsigned int cache_volt = be32_to_cpup(val++); ++ unsigned long cpu_freq = be32_to_cpup(val++) * 1000; ++ ++ krait_l2_points[i].cache_freq = cache_freq; ++ krait_l2_points[i].cache_volt = cache_volt; ++ krait_l2_points[i].cpu_freq = cpu_freq; ++ } ++ ++ return 0; ++} ++ ++static int krait_set_target(struct cpufreq_policy *policy, unsigned int index) ++{ ++ struct dev_pm_opp *opp; ++ unsigned long volt = 0, volt_old = 0, tol = 0; ++ unsigned long freq, max_cpu_freq = 0; ++ unsigned int old_freq, new_freq; ++ long freq_Hz, freq_exact; ++ int ret, i; ++ struct clk *cpu_clk; ++ struct regulator *core; ++ unsigned int cpu; ++ ++ cpu_clk = per_cpu(krait_cpu_clks, policy->cpu); ++ ++ freq_Hz = clk_round_rate(cpu_clk, freq_table[index].frequency * 1000); ++ if (freq_Hz <= 0) ++ freq_Hz = freq_table[index].frequency * 1000; ++ ++ freq_exact = freq_Hz; ++ new_freq = freq_Hz / 1000; ++ old_freq = clk_get_rate(cpu_clk) / 1000; ++ ++ core = per_cpu(krait_supply_core, policy->cpu); ++ ++ rcu_read_lock(); ++ opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_Hz); ++ if (IS_ERR(opp)) { ++ rcu_read_unlock(); ++ pr_err("failed to find OPP for %ld\n", freq_Hz); ++ return PTR_ERR(opp); ++ } ++ volt = dev_pm_opp_get_voltage(opp); ++ rcu_read_unlock(); ++ tol = volt * voltage_tolerance / 100; ++ volt_old = regulator_get_voltage(core); ++ ++ pr_debug("%u MHz, %ld mV --> %u MHz, %ld mV\n", ++ old_freq / 1000, volt_old ? volt_old / 1000 : -1, ++ new_freq / 1000, volt ? volt / 1000 : -1); ++ ++ /* scaling up? scale voltage before frequency */ ++ if (new_freq > old_freq) { ++ ret = regulator_set_voltage_tol(core, volt, tol); ++ if (ret) { ++ pr_err("failed to scale voltage up: %d\n", ret); ++ return ret; ++ } ++ } ++ ++ ret = clk_set_rate(cpu_clk, freq_exact); ++ if (ret) { ++ pr_err("failed to set clock rate: %d\n", ret); ++ return ret; ++ } ++ ++ /* scaling down? scale voltage after frequency */ ++ if (new_freq < old_freq) { ++ ret = regulator_set_voltage_tol(core, volt, tol); ++ if (ret) { ++ pr_err("failed to scale voltage down: %d\n", ret); ++ clk_set_rate(cpu_clk, old_freq * 1000); ++ } ++ } ++ ++ for_each_possible_cpu(cpu) { ++ freq = clk_get_rate(per_cpu(krait_cpu_clks, cpu)); ++ max_cpu_freq = max(max_cpu_freq, freq); ++ } ++ ++ for (i = 0; i < nr_krait_l2_points; i++) { ++ if (max_cpu_freq >= krait_l2_points[i].cpu_freq) { ++ if (krait_l2_reg) { ++ ret = regulator_set_voltage_tol(krait_l2_reg, ++ krait_l2_points[i].cache_volt, ++ tol); ++ if (ret) { ++ pr_err("failed to scale l2 voltage: %d\n", ++ ret); ++ } ++ } ++ ret = clk_set_rate(krait_l2_clk, ++ krait_l2_points[i].cache_freq); ++ if (ret) ++ pr_err("failed to scale l2 clk: %d\n", ret); ++ break; ++ } ++ ++ } ++ ++ return ret; ++} ++ ++static int krait_cpufreq_init(struct cpufreq_policy *policy) ++{ ++ int ret; ++ ++ policy->clk = per_cpu(krait_cpu_clks, policy->cpu); ++ ++ ret = cpufreq_table_validate_and_show(policy, freq_table); ++ if (ret) { ++ pr_err("%s: invalid frequency table: %d\n", __func__, ret); ++ return ret; ++ } ++ ++ policy->cpuinfo.transition_latency = transition_latency; ++ ++ return 0; ++} ++ ++static struct cpufreq_driver krait_cpufreq_driver = { ++ .flags = CPUFREQ_STICKY, ++ .verify = cpufreq_generic_frequency_table_verify, ++ .target_index = krait_set_target, ++ .get = cpufreq_generic_get, ++ .init = krait_cpufreq_init, ++ .name = "generic_krait", ++ .attr = cpufreq_generic_attr, ++}; ++ ++static int krait_cpufreq_probe(struct platform_device *pdev) ++{ ++ struct device_node *np, *cache; ++ int ret, i; ++ unsigned int cpu; ++ struct device *dev; ++ struct clk *clk; ++ struct regulator *core; ++ unsigned long freq_Hz, freq, max_cpu_freq; ++ struct dev_pm_opp *opp; ++ unsigned long volt, tol; ++ ++ cpu_dev = get_cpu_device(0); ++ if (!cpu_dev) { ++ pr_err("failed to get krait device\n"); ++ return -ENODEV; ++ } ++ ++ np = of_node_get(cpu_dev->of_node); ++ if (!np) { ++ pr_err("failed to find krait node\n"); ++ return -ENOENT; ++ } ++ ++ ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table); ++ if (ret) { ++ pr_err("failed to init cpufreq table: %d\n", ret); ++ goto out_put_node; ++ } ++ ++ of_property_read_u32(np, "voltage-tolerance", &voltage_tolerance); ++ ++ if (of_property_read_u32(np, "clock-latency", &transition_latency)) ++ transition_latency = CPUFREQ_ETERNAL; ++ ++ cache = of_find_next_cache_node(np); ++ if (cache) { ++ struct device_node *vdd; ++ ++ vdd = of_parse_phandle(cache, "vdd_dig-supply", 0); ++ if (vdd) { ++ krait_l2_reg = regulator_get(NULL, vdd->name); ++ if (IS_ERR(krait_l2_reg)) { ++ pr_warn("failed to get l2 vdd_dig supply\n"); ++ krait_l2_reg = NULL; ++ } ++ of_node_put(vdd); ++ } ++ ++ krait_l2_clk = of_clk_get(cache, 0); ++ if (!IS_ERR(krait_l2_clk)) { ++ ret = krait_parse_cache_points(&pdev->dev, cache); ++ if (ret) ++ clk_put(krait_l2_clk); ++ } ++ if (IS_ERR(krait_l2_clk) || ret) ++ krait_l2_clk = NULL; ++ } ++ ++ for_each_possible_cpu(cpu) { ++ dev = get_cpu_device(cpu); ++ if (!dev) { ++ pr_err("failed to get krait device\n"); ++ ret = -ENOENT; ++ goto out_free_table; ++ } ++ per_cpu(krait_cpu_clks, cpu) = clk = devm_clk_get(dev, NULL); ++ if (IS_ERR(clk)) { ++ ret = PTR_ERR(clk); ++ goto out_free_table; ++ } ++ core = devm_regulator_get(dev, "core"); ++ if (IS_ERR(core)) { ++ pr_debug("failed to get core regulator\n"); ++ ret = PTR_ERR(core); ++ goto out_free_table; ++ } ++ per_cpu(krait_supply_core, cpu) = core; ++ ++ freq_Hz = clk_get_rate(clk); ++ ++ rcu_read_lock(); ++ opp = dev_pm_opp_find_freq_ceil(cpu_dev, &freq_Hz); ++ if (IS_ERR(opp)) { ++ rcu_read_unlock(); ++ pr_err("failed to find OPP for %ld\n", freq_Hz); ++ ret = PTR_ERR(opp); ++ goto out_free_table; ++ } ++ volt = dev_pm_opp_get_voltage(opp); ++ rcu_read_unlock(); ++ ++ tol = volt * voltage_tolerance / 100; ++ ret = regulator_set_voltage_tol(core, volt, tol); ++ if (ret) { ++ pr_err("failed to scale voltage up: %d\n", ret); ++ goto out_free_table; ++ } ++ ret = regulator_enable(core); ++ if (ret) { ++ pr_err("failed to enable regulator: %d\n", ret); ++ goto out_free_table; ++ } ++ max_cpu_freq = max(max_cpu_freq, freq); ++ } ++ ++ for (i = 0; i < nr_krait_l2_points; i++) { ++ if (max_cpu_freq >= krait_l2_points[i].cpu_freq) { ++ if (krait_l2_reg) { ++ ret = regulator_set_voltage_tol(krait_l2_reg, ++ krait_l2_points[i].cache_volt, ++ tol); ++ if (ret) ++ pr_err("failed to scale l2 voltage: %d\n", ++ ret); ++ ret = regulator_enable(krait_l2_reg); ++ if (ret) ++ pr_err("failed to enable l2 voltage: %d\n", ++ ret); ++ } ++ break; ++ } ++ ++ } ++ ++ ret = cpufreq_register_driver(&krait_cpufreq_driver); ++ if (ret) { ++ pr_err("failed register driver: %d\n", ret); ++ goto out_free_table; ++ } ++ of_node_put(np); ++ ++ /* ++ * For now, just loading the cooling device; ++ * thermal DT code takes care of matching them. ++ */ ++ for_each_possible_cpu(cpu) { ++ dev = get_cpu_device(cpu); ++ np = of_node_get(dev->of_node); ++ if (of_find_property(np, "#cooling-cells", NULL)) { ++ cdev = of_cpufreq_cooling_register(np, cpumask_of(cpu)); ++ if (IS_ERR(cdev)) ++ pr_err("running cpufreq without cooling device: %ld\n", ++ PTR_ERR(cdev)); ++ } ++ of_node_put(np); ++ } ++ ++ return 0; ++ ++out_free_table: ++ regulator_put(krait_l2_reg); ++ clk_put(krait_l2_clk); ++ dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table); ++out_put_node: ++ of_node_put(np); ++ return ret; ++} ++ ++static int krait_cpufreq_remove(struct platform_device *pdev) ++{ ++ cpufreq_cooling_unregister(cdev); ++ cpufreq_unregister_driver(&krait_cpufreq_driver); ++ dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table); ++ clk_put(krait_l2_clk); ++ regulator_put(krait_l2_reg); ++ ++ return 0; ++} ++ ++static struct platform_driver krait_cpufreq_platdrv = { ++ .driver = { ++ .name = "cpufreq-krait", ++ .owner = THIS_MODULE, ++ }, ++ .probe = krait_cpufreq_probe, ++ .remove = krait_cpufreq_remove, ++}; ++module_platform_driver(krait_cpufreq_platdrv); ++ ++MODULE_DESCRIPTION("Krait CPUfreq driver"); ++MODULE_LICENSE("GPL v2"); +--- a/drivers/cpufreq/qcom-cpufreq.c ++++ b/drivers/cpufreq/qcom-cpufreq.c +@@ -168,11 +168,8 @@ static int __init qcom_cpufreq_populate_ + + static int __init qcom_cpufreq_driver_init(void) + { +- struct cpufreq_dt_platform_data pdata = { .independent_clocks = true }; + struct platform_device_info devinfo = { +- .name = "cpufreq-dt", +- .data = &pdata, +- .size_data = sizeof(pdata), ++ .name = "cpufreq-krait", + }; + struct device *cpu_dev; + struct device_node *np; diff --git a/target/linux/ipq806x/patches-4.0/700-add-gmac-dts-suport.patch b/target/linux/ipq806x/patches-4.0/700-add-gmac-dts-suport.patch index 25a9373208..7b628a7aeb 100644 --- a/target/linux/ipq806x/patches-4.0/700-add-gmac-dts-suport.patch +++ b/target/linux/ipq806x/patches-4.0/700-add-gmac-dts-suport.patch @@ -127,7 +127,7 @@ / { model = "Qualcomm IPQ8064"; -@@ -479,5 +480,42 @@ +@@ -539,5 +540,42 @@ status = "disabled"; }; |