From 1de74df8b9bbaafd147a2380fa306140b79b60d9 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 9 Apr 2018 09:50:23 +0200 Subject: bcm53xx: drop linux 4.4 and 4.9 support Signed-off-by: Felix Fietkau --- ...clk-bcm-Add-driver-for-BCM53573-ILP-clock.patch | 224 --------------------- 1 file changed, 224 deletions(-) delete mode 100644 target/linux/bcm53xx/patches-4.4/089-clk-bcm-Add-driver-for-BCM53573-ILP-clock.patch (limited to 'target/linux/bcm53xx/patches-4.4/089-clk-bcm-Add-driver-for-BCM53573-ILP-clock.patch') diff --git a/target/linux/bcm53xx/patches-4.4/089-clk-bcm-Add-driver-for-BCM53573-ILP-clock.patch b/target/linux/bcm53xx/patches-4.4/089-clk-bcm-Add-driver-for-BCM53573-ILP-clock.patch deleted file mode 100644 index b3f8b9107b..0000000000 --- a/target/linux/bcm53xx/patches-4.4/089-clk-bcm-Add-driver-for-BCM53573-ILP-clock.patch +++ /dev/null @@ -1,224 +0,0 @@ -From bd8dd593f7d2211f2273e05741d157b0c8d020ae Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= -Date: Tue, 13 Sep 2016 09:06:04 +0200 -Subject: [PATCH] clk: bcm: Add driver for BCM53573 ILP clock -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -This clock is present on BCM53573 devices (including BCM47189) that use -Cortex-A7. ILP is a part of PMU (Power Management Unit) multi-function -device so we use syscon (and regmap) for it. - -Signed-off-by: Rafał Miłecki -Acked-by: Rob Herring -[sboyd@codeaurora.org: Remove 0 from clk_init_data to silence sparse] -Signed-off-by: Stephen Boyd ---- - .../bindings/clock/brcm,bcm53573-ilp.txt | 36 +++++ - drivers/clk/bcm/Makefile | 1 + - drivers/clk/bcm/clk-bcm53573-ilp.c | 148 +++++++++++++++++++++ - 3 files changed, 185 insertions(+) - create mode 100644 Documentation/devicetree/bindings/clock/brcm,bcm53573-ilp.txt - create mode 100644 drivers/clk/bcm/clk-bcm53573-ilp.c - ---- /dev/null -+++ b/Documentation/devicetree/bindings/clock/brcm,bcm53573-ilp.txt -@@ -0,0 +1,36 @@ -+Broadcom BCM53573 ILP clock -+=========================== -+ -+This binding uses the common clock binding: -+ Documentation/devicetree/bindings/clock/clock-bindings.txt -+ -+This binding is used for ILP clock (sometimes referred as "slow clock") -+on Broadcom BCM53573 devices using Cortex-A7 CPU. -+ -+ILP's rate has to be calculated on runtime and it depends on ALP clock -+which has to be referenced. -+ -+This clock is part of PMU (Power Management Unit), a Broadcom's device -+handing power-related aspects. Its node must be sub-node of the PMU -+device. -+ -+Required properties: -+- compatible: "brcm,bcm53573-ilp" -+- clocks: has to reference an ALP clock -+- #clock-cells: should be <0> -+- clock-output-names: from common clock bindings, should contain clock -+ name -+ -+Example: -+ -+pmu@18012000 { -+ compatible = "simple-mfd", "syscon"; -+ reg = <0x18012000 0x00001000>; -+ -+ ilp { -+ compatible = "brcm,bcm53573-ilp"; -+ clocks = <&alp>; -+ #clock-cells = <0>; -+ clock-output-names = "ilp"; -+ }; -+}; ---- a/drivers/clk/bcm/Makefile -+++ b/drivers/clk/bcm/Makefile -@@ -4,6 +4,7 @@ obj-$(CONFIG_CLK_BCM_KONA) += clk-bcm281 - obj-$(CONFIG_CLK_BCM_KONA) += clk-bcm21664.o - obj-$(CONFIG_COMMON_CLK_IPROC) += clk-iproc-armpll.o clk-iproc-pll.o clk-iproc-asiu.o - obj-$(CONFIG_ARCH_BCM2835) += clk-bcm2835.o -+obj-$(CONFIG_ARCH_BCM_53573) += clk-bcm53573-ilp.o - obj-$(CONFIG_COMMON_CLK_IPROC) += clk-ns2.o - obj-$(CONFIG_ARCH_BCM_CYGNUS) += clk-cygnus.o - obj-$(CONFIG_ARCH_BCM_NSP) += clk-nsp.o ---- /dev/null -+++ b/drivers/clk/bcm/clk-bcm53573-ilp.c -@@ -0,0 +1,148 @@ -+/* -+ * Copyright (C) 2016 Rafał Miłecki -+ * -+ * 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 -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#define PMU_XTAL_FREQ_RATIO 0x66c -+#define XTAL_ALP_PER_4ILP 0x00001fff -+#define XTAL_CTL_EN 0x80000000 -+#define PMU_SLOW_CLK_PERIOD 0x6dc -+ -+struct bcm53573_ilp { -+ struct clk_hw hw; -+ struct regmap *regmap; -+}; -+ -+static int bcm53573_ilp_enable(struct clk_hw *hw) -+{ -+ struct bcm53573_ilp *ilp = container_of(hw, struct bcm53573_ilp, hw); -+ -+ regmap_write(ilp->regmap, PMU_SLOW_CLK_PERIOD, 0x10199); -+ regmap_write(ilp->regmap, 0x674, 0x10000); -+ -+ return 0; -+} -+ -+static void bcm53573_ilp_disable(struct clk_hw *hw) -+{ -+ struct bcm53573_ilp *ilp = container_of(hw, struct bcm53573_ilp, hw); -+ -+ regmap_write(ilp->regmap, PMU_SLOW_CLK_PERIOD, 0); -+ regmap_write(ilp->regmap, 0x674, 0); -+} -+ -+static unsigned long bcm53573_ilp_recalc_rate(struct clk_hw *hw, -+ unsigned long parent_rate) -+{ -+ struct bcm53573_ilp *ilp = container_of(hw, struct bcm53573_ilp, hw); -+ struct regmap *regmap = ilp->regmap; -+ u32 last_val, cur_val; -+ int sum = 0, num = 0, loop_num = 0; -+ int avg; -+ -+ /* Enable measurement */ -+ regmap_write(regmap, PMU_XTAL_FREQ_RATIO, XTAL_CTL_EN); -+ -+ /* Read initial value */ -+ regmap_read(regmap, PMU_XTAL_FREQ_RATIO, &last_val); -+ last_val &= XTAL_ALP_PER_4ILP; -+ -+ /* -+ * At minimum we should loop for a bit to let hardware do the -+ * measurement. This isn't very accurate however, so for a better -+ * precision lets try getting 20 different values for and use average. -+ */ -+ while (num < 20) { -+ regmap_read(regmap, PMU_XTAL_FREQ_RATIO, &cur_val); -+ cur_val &= XTAL_ALP_PER_4ILP; -+ -+ if (cur_val != last_val) { -+ /* Got different value, use it */ -+ sum += cur_val; -+ num++; -+ loop_num = 0; -+ last_val = cur_val; -+ } else if (++loop_num > 5000) { -+ /* Same value over and over, give up */ -+ sum += cur_val; -+ num++; -+ break; -+ } -+ -+ cpu_relax(); -+ } -+ -+ /* Disable measurement to save power */ -+ regmap_write(regmap, PMU_XTAL_FREQ_RATIO, 0x0); -+ -+ avg = sum / num; -+ -+ return parent_rate * 4 / avg; -+} -+ -+static const struct clk_ops bcm53573_ilp_clk_ops = { -+ .enable = bcm53573_ilp_enable, -+ .disable = bcm53573_ilp_disable, -+ .recalc_rate = bcm53573_ilp_recalc_rate, -+}; -+ -+static void bcm53573_ilp_init(struct device_node *np) -+{ -+ struct bcm53573_ilp *ilp; -+ struct clk_init_data init = { }; -+ const char *parent_name; -+ int err; -+ -+ ilp = kzalloc(sizeof(*ilp), GFP_KERNEL); -+ if (!ilp) -+ return; -+ -+ parent_name = of_clk_get_parent_name(np, 0); -+ if (!parent_name) { -+ err = -ENOENT; -+ goto err_free_ilp; -+ } -+ -+ ilp->regmap = syscon_node_to_regmap(of_get_parent(np)); -+ if (IS_ERR(ilp->regmap)) { -+ err = PTR_ERR(ilp->regmap); -+ goto err_free_ilp; -+ } -+ -+ init.name = np->name; -+ init.ops = &bcm53573_ilp_clk_ops; -+ init.parent_names = &parent_name; -+ init.num_parents = 1; -+ -+ ilp->hw.init = &init; -+ err = clk_hw_register(NULL, &ilp->hw); -+ if (err) -+ goto err_free_ilp; -+ -+ err = of_clk_add_hw_provider(np, of_clk_hw_simple_get, &ilp->hw); -+ if (err) -+ goto err_clk_hw_unregister; -+ -+ return; -+ -+err_clk_hw_unregister: -+ clk_hw_unregister(&ilp->hw); -+err_free_ilp: -+ kfree(ilp); -+ pr_err("Failed to init ILP clock: %d\n", err); -+} -+ -+/* We need it very early for arch code, before device model gets ready */ -+CLK_OF_DECLARE(bcm53573_ilp_clk, "brcm,bcm53573-ilp", bcm53573_ilp_init); -- cgit v1.2.3