diff options
Diffstat (limited to 'target/linux/imx6/patches-3.14/0008-ARM-imx-add-speed-grading-check-for-i.mx6-soc.patch')
-rw-r--r-- | target/linux/imx6/patches-3.14/0008-ARM-imx-add-speed-grading-check-for-i.mx6-soc.patch | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/target/linux/imx6/patches-3.14/0008-ARM-imx-add-speed-grading-check-for-i.mx6-soc.patch b/target/linux/imx6/patches-3.14/0008-ARM-imx-add-speed-grading-check-for-i.mx6-soc.patch deleted file mode 100644 index 70b7014314..0000000000 --- a/target/linux/imx6/patches-3.14/0008-ARM-imx-add-speed-grading-check-for-i.mx6-soc.patch +++ /dev/null @@ -1,76 +0,0 @@ -From c962a0996335fae7f79e64677f47d4784b86f692 Mon Sep 17 00:00:00 2001 -From: Anson Huang <b20788@freescale.com> -Date: Wed, 12 Feb 2014 17:57:03 +0800 -Subject: [PATCH] ARM: imx: add speed grading check for i.mx6 soc - -The fuse map of speed_grading[1:0] defines the max speed -of ARM, see below the definition: - -2b'11: 1200000000Hz; -2b'10: 996000000Hz; -2b'01: 852000000Hz; -- i.MX6Q Only, exclusive with 996MHz. -2b'00: 792000000Hz; - -Need to remove all illegal setpoints according to fuse -map. - -Signed-off-by: Anson Huang <b20788@freescale.com> -Signed-off-by: Shawn Guo <shawn.guo@linaro.org> ---- - arch/arm/mach-imx/mach-imx6q.c | 26 +++++++++++++++++++++++--- - 1 file changed, 23 insertions(+), 3 deletions(-) - ---- a/arch/arm/mach-imx/mach-imx6q.c -+++ b/arch/arm/mach-imx/mach-imx6q.c -@@ -219,8 +219,10 @@ static void __init imx6q_init_machine(vo - #define OCOTP_CFG3 0x440 - #define OCOTP_CFG3_SPEED_SHIFT 16 - #define OCOTP_CFG3_SPEED_1P2GHZ 0x3 -+#define OCOTP_CFG3_SPEED_996MHZ 0x2 -+#define OCOTP_CFG3_SPEED_852MHZ 0x1 - --static void __init imx6q_opp_check_1p2ghz(struct device *cpu_dev) -+static void __init imx6q_opp_check_speed_grading(struct device *cpu_dev) - { - struct device_node *np; - void __iomem *base; -@@ -238,11 +240,29 @@ static void __init imx6q_opp_check_1p2gh - goto put_node; - } - -+ /* -+ * SPEED_GRADING[1:0] defines the max speed of ARM: -+ * 2b'11: 1200000000Hz; -+ * 2b'10: 996000000Hz; -+ * 2b'01: 852000000Hz; -- i.MX6Q Only, exclusive with 996MHz. -+ * 2b'00: 792000000Hz; -+ * We need to set the max speed of ARM according to fuse map. -+ */ - val = readl_relaxed(base + OCOTP_CFG3); - val >>= OCOTP_CFG3_SPEED_SHIFT; -- if ((val & 0x3) != OCOTP_CFG3_SPEED_1P2GHZ) -+ val &= 0x3; -+ -+ if (val != OCOTP_CFG3_SPEED_1P2GHZ) - if (dev_pm_opp_disable(cpu_dev, 1200000000)) - pr_warn("failed to disable 1.2 GHz OPP\n"); -+ if (val < OCOTP_CFG3_SPEED_996MHZ) -+ if (dev_pm_opp_disable(cpu_dev, 996000000)) -+ pr_warn("failed to disable 996 MHz OPP\n"); -+ if (cpu_is_imx6q()) { -+ if (val != OCOTP_CFG3_SPEED_852MHZ) -+ if (dev_pm_opp_disable(cpu_dev, 852000000)) -+ pr_warn("failed to disable 852 MHz OPP\n"); -+ } - - put_node: - of_node_put(np); -@@ -268,7 +288,7 @@ static void __init imx6q_opp_init(void) - goto put_node; - } - -- imx6q_opp_check_1p2ghz(cpu_dev); -+ imx6q_opp_check_speed_grading(cpu_dev); - - put_node: - of_node_put(np); |