-* Clock Block on Freescale CoreNet Platforms
+* Clock Block on Freescale QorIQ Platforms
-Freescale CoreNet chips take primary clocking input from the external
+Freescale qoriq chips take primary clocking input from the external
SYSCLK signal. The SYSCLK input (frequency) is multiplied using
multiple phase locked loops (PLL) to create a variety of frequencies
which can then be passed to a variety of internal logic, including
* "fsl,t4240-clockgen"
* "fsl,b4420-clockgen"
* "fsl,b4860-clockgen"
+ * "fsl,ls1021a-clockgen"
Chassis clock strings include:
* "fsl,qoriq-clockgen-1.0": for chassis 1.0 clocks
* "fsl,qoriq-clockgen-2.0": for chassis 2.0 clocks
Support for the Analog Devices axi-clkgen pcore clock generator for Xilinx
FPGAs. It is commonly used in Analog Devices' reference designs.
-config CLK_PPC_CORENET
- bool "Clock driver for PowerPC corenet platforms"
- depends on PPC_E500MC && OF
+config CLK_QORIQ
+ bool "Clock driver for Freescale QorIQ platforms"
+ depends on (PPC_E500MC || ARM) && OF
---help---
- This adds the clock driver support for Freescale PowerPC corenet
- platforms using common clock framework.
+ This adds the clock driver support for Freescale QorIQ platforms
+ using common clock framework.
config COMMON_CLK_XGENE
bool "Clock driver for APM XGene SoC"
obj-$(CONFIG_ARCH_NOMADIK) += clk-nomadik.o
obj-$(CONFIG_ARCH_NSPIRE) += clk-nspire.o
obj-$(CONFIG_COMMON_CLK_PALMAS) += clk-palmas.o
-obj-$(CONFIG_CLK_PPC_CORENET) += clk-ppc-corenet.o
+obj-$(CONFIG_CLK_QORIQ) += clk-qoriq.o
obj-$(CONFIG_COMMON_CLK_RK808) += clk-rk808.o
obj-$(CONFIG_COMMON_CLK_S2MPS11) += clk-s2mps11.o
obj-$(CONFIG_COMMON_CLK_SI5351) += clk-si5351.o
+++ /dev/null
-/*
- * Copyright 2013 Freescale Semiconductor, Inc.
- *
- * 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.
- *
- * clock driver for Freescale PowerPC corenet SoCs.
- */
-#include <linux/clk-provider.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
-#include <linux/of.h>
-#include <linux/slab.h>
-
-struct cmux_clk {
- struct clk_hw hw;
- void __iomem *reg;
- unsigned int clk_per_pll;
- u32 flags;
-};
-
-#define PLL_KILL BIT(31)
-#define CLKSEL_SHIFT 27
-#define CLKSEL_ADJUST BIT(0)
-#define to_cmux_clk(p) container_of(p, struct cmux_clk, hw)
-
-static int cmux_set_parent(struct clk_hw *hw, u8 idx)
-{
- struct cmux_clk *clk = to_cmux_clk(hw);
- u32 clksel;
-
- clksel = ((idx / clk->clk_per_pll) << 2) + idx % clk->clk_per_pll;
- if (clk->flags & CLKSEL_ADJUST)
- clksel += 8;
- clksel = (clksel & 0xf) << CLKSEL_SHIFT;
- iowrite32be(clksel, clk->reg);
-
- return 0;
-}
-
-static u8 cmux_get_parent(struct clk_hw *hw)
-{
- struct cmux_clk *clk = to_cmux_clk(hw);
- u32 clksel;
-
- clksel = ioread32be(clk->reg);
- clksel = (clksel >> CLKSEL_SHIFT) & 0xf;
- if (clk->flags & CLKSEL_ADJUST)
- clksel -= 8;
- clksel = (clksel >> 2) * clk->clk_per_pll + clksel % 4;
-
- return clksel;
-}
-
-const struct clk_ops cmux_ops = {
- .get_parent = cmux_get_parent,
- .set_parent = cmux_set_parent,
-};
-
-static void __init core_mux_init(struct device_node *np)
-{
- struct clk *clk;
- struct clk_init_data init;
- struct cmux_clk *cmux_clk;
- struct device_node *node;
- int rc, count, i;
- u32 offset;
- const char *clk_name;
- const char **parent_names;
- struct of_phandle_args clkspec;
-
- rc = of_property_read_u32(np, "reg", &offset);
- if (rc) {
- pr_err("%s: could not get reg property\n", np->name);
- return;
- }
-
- /* get the input clock source count */
- count = of_property_count_strings(np, "clock-names");
- if (count < 0) {
- pr_err("%s: get clock count error\n", np->name);
- return;
- }
- parent_names = kzalloc((sizeof(char *) * count), GFP_KERNEL);
- if (!parent_names) {
- pr_err("%s: could not allocate parent_names\n", __func__);
- return;
- }
-
- for (i = 0; i < count; i++)
- parent_names[i] = of_clk_get_parent_name(np, i);
-
- cmux_clk = kzalloc(sizeof(struct cmux_clk), GFP_KERNEL);
- if (!cmux_clk) {
- pr_err("%s: could not allocate cmux_clk\n", __func__);
- goto err_name;
- }
- cmux_clk->reg = of_iomap(np, 0);
- if (!cmux_clk->reg) {
- pr_err("%s: could not map register\n", __func__);
- goto err_clk;
- }
-
- rc = of_parse_phandle_with_args(np, "clocks", "#clock-cells", 0,
- &clkspec);
- if (rc) {
- pr_err("%s: parse clock node error\n", __func__);
- goto err_clk;
- }
-
- cmux_clk->clk_per_pll = of_property_count_strings(clkspec.np,
- "clock-output-names");
- of_node_put(clkspec.np);
-
- node = of_find_compatible_node(NULL, NULL, "fsl,p4080-clockgen");
- if (node && (offset >= 0x80))
- cmux_clk->flags = CLKSEL_ADJUST;
-
- rc = of_property_read_string_index(np, "clock-output-names",
- 0, &clk_name);
- if (rc) {
- pr_err("%s: read clock names error\n", np->name);
- goto err_clk;
- }
-
- init.name = clk_name;
- init.ops = &cmux_ops;
- init.parent_names = parent_names;
- init.num_parents = count;
- init.flags = 0;
- cmux_clk->hw.init = &init;
-
- clk = clk_register(NULL, &cmux_clk->hw);
- if (IS_ERR(clk)) {
- pr_err("%s: could not register clock\n", clk_name);
- goto err_clk;
- }
-
- rc = of_clk_add_provider(np, of_clk_src_simple_get, clk);
- if (rc) {
- pr_err("Could not register clock provider for node:%s\n",
- np->name);
- goto err_clk;
- }
- goto err_name;
-
-err_clk:
- kfree(cmux_clk);
-err_name:
- /* free *_names because they are reallocated when registered */
- kfree(parent_names);
-}
-
-static void __init core_pll_init(struct device_node *np)
-{
- u32 mult;
- int i, rc, count;
- const char *clk_name, *parent_name;
- struct clk_onecell_data *onecell_data;
- struct clk **subclks;
- void __iomem *base;
-
- base = of_iomap(np, 0);
- if (!base) {
- pr_err("clk-ppc: iomap error\n");
- return;
- }
-
- /* get the multiple of PLL */
- mult = ioread32be(base);
-
- /* check if this PLL is disabled */
- if (mult & PLL_KILL) {
- pr_debug("PLL:%s is disabled\n", np->name);
- goto err_map;
- }
- mult = (mult >> 1) & 0x3f;
-
- parent_name = of_clk_get_parent_name(np, 0);
- if (!parent_name) {
- pr_err("PLL: %s must have a parent\n", np->name);
- goto err_map;
- }
-
- count = of_property_count_strings(np, "clock-output-names");
- if (count < 0 || count > 4) {
- pr_err("%s: clock is not supported\n", np->name);
- goto err_map;
- }
-
- subclks = kzalloc(sizeof(struct clk *) * count, GFP_KERNEL);
- if (!subclks) {
- pr_err("%s: could not allocate subclks\n", __func__);
- goto err_map;
- }
-
- onecell_data = kzalloc(sizeof(struct clk_onecell_data), GFP_KERNEL);
- if (!onecell_data) {
- pr_err("%s: could not allocate onecell_data\n", __func__);
- goto err_clks;
- }
-
- for (i = 0; i < count; i++) {
- rc = of_property_read_string_index(np, "clock-output-names",
- i, &clk_name);
- if (rc) {
- pr_err("%s: could not get clock names\n", np->name);
- goto err_cell;
- }
-
- /*
- * when count == 4, there are 4 output clocks:
- * /1, /2, /3, /4 respectively
- * when count < 4, there are at least 2 output clocks:
- * /1, /2, (/4, if count == 3) respectively.
- */
- if (count == 4)
- subclks[i] = clk_register_fixed_factor(NULL, clk_name,
- parent_name, 0, mult, 1 + i);
- else
-
- subclks[i] = clk_register_fixed_factor(NULL, clk_name,
- parent_name, 0, mult, 1 << i);
-
- if (IS_ERR(subclks[i])) {
- pr_err("%s: could not register clock\n", clk_name);
- goto err_cell;
- }
- }
-
- onecell_data->clks = subclks;
- onecell_data->clk_num = count;
-
- rc = of_clk_add_provider(np, of_clk_src_onecell_get, onecell_data);
- if (rc) {
- pr_err("Could not register clk provider for node:%s\n",
- np->name);
- goto err_cell;
- }
-
- iounmap(base);
- return;
-err_cell:
- kfree(onecell_data);
-err_clks:
- kfree(subclks);
-err_map:
- iounmap(base);
-}
-
-static void __init sysclk_init(struct device_node *node)
-{
- struct clk *clk;
- const char *clk_name = node->name;
- struct device_node *np = of_get_parent(node);
- u32 rate;
-
- if (!np) {
- pr_err("ppc-clk: could not get parent node\n");
- return;
- }
-
- if (of_property_read_u32(np, "clock-frequency", &rate)) {
- of_node_put(node);
- return;
- }
-
- of_property_read_string(np, "clock-output-names", &clk_name);
-
- clk = clk_register_fixed_rate(NULL, clk_name, NULL, CLK_IS_ROOT, rate);
- if (!IS_ERR(clk))
- of_clk_add_provider(np, of_clk_src_simple_get, clk);
-}
-CLK_OF_DECLARE(qoriq_sysclk_1, "fsl,qoriq-sysclk-1.0", sysclk_init);
-CLK_OF_DECLARE(qoriq_sysclk_2, "fsl,qoriq-sysclk-2.0", sysclk_init);
-CLK_OF_DECLARE(qoriq_core_pll_1, "fsl,qoriq-core-pll-1.0", core_pll_init);
-CLK_OF_DECLARE(qoriq_core_pll_2, "fsl,qoriq-core-pll-2.0", core_pll_init);
-CLK_OF_DECLARE(qoriq_core_mux_1, "fsl,qoriq-core-mux-1.0", core_mux_init);
-CLK_OF_DECLARE(qoriq_core_mux_2, "fsl,qoriq-core-mux-2.0", core_mux_init);
--- /dev/null
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ *
+ * clock driver for Freescale QorIQ SoCs.
+ */
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+
+struct cmux_clk {
+ struct clk_hw hw;
+ void __iomem *reg;
+ unsigned int clk_per_pll;
+ u32 flags;
+};
+
+#define PLL_KILL BIT(31)
+#define CLKSEL_SHIFT 27
+#define CLKSEL_ADJUST BIT(0)
+#define to_cmux_clk(p) container_of(p, struct cmux_clk, hw)
+
+static int cmux_set_parent(struct clk_hw *hw, u8 idx)
+{
+ struct cmux_clk *clk = to_cmux_clk(hw);
+ u32 clksel;
+
+ clksel = ((idx / clk->clk_per_pll) << 2) + idx % clk->clk_per_pll;
+ if (clk->flags & CLKSEL_ADJUST)
+ clksel += 8;
+ clksel = (clksel & 0xf) << CLKSEL_SHIFT;
+ iowrite32be(clksel, clk->reg);
+
+ return 0;
+}
+
+static u8 cmux_get_parent(struct clk_hw *hw)
+{
+ struct cmux_clk *clk = to_cmux_clk(hw);
+ u32 clksel;
+
+ clksel = ioread32be(clk->reg);
+ clksel = (clksel >> CLKSEL_SHIFT) & 0xf;
+ if (clk->flags & CLKSEL_ADJUST)
+ clksel -= 8;
+ clksel = (clksel >> 2) * clk->clk_per_pll + clksel % 4;
+
+ return clksel;
+}
+
+const struct clk_ops cmux_ops = {
+ .get_parent = cmux_get_parent,
+ .set_parent = cmux_set_parent,
+};
+
+static void __init core_mux_init(struct device_node *np)
+{
+ struct clk *clk;
+ struct clk_init_data init;
+ struct cmux_clk *cmux_clk;
+ struct device_node *node;
+ int rc, count, i;
+ u32 offset;
+ const char *clk_name;
+ const char **parent_names;
+ struct of_phandle_args clkspec;
+
+ rc = of_property_read_u32(np, "reg", &offset);
+ if (rc) {
+ pr_err("%s: could not get reg property\n", np->name);
+ return;
+ }
+
+ /* get the input clock source count */
+ count = of_property_count_strings(np, "clock-names");
+ if (count < 0) {
+ pr_err("%s: get clock count error\n", np->name);
+ return;
+ }
+ parent_names = kzalloc((sizeof(char *) * count), GFP_KERNEL);
+ if (!parent_names) {
+ pr_err("%s: could not allocate parent_names\n", __func__);
+ return;
+ }
+
+ for (i = 0; i < count; i++)
+ parent_names[i] = of_clk_get_parent_name(np, i);
+
+ cmux_clk = kzalloc(sizeof(struct cmux_clk), GFP_KERNEL);
+ if (!cmux_clk) {
+ pr_err("%s: could not allocate cmux_clk\n", __func__);
+ goto err_name;
+ }
+ cmux_clk->reg = of_iomap(np, 0);
+ if (!cmux_clk->reg) {
+ pr_err("%s: could not map register\n", __func__);
+ goto err_clk;
+ }
+
+ rc = of_parse_phandle_with_args(np, "clocks", "#clock-cells", 0,
+ &clkspec);
+ if (rc) {
+ pr_err("%s: parse clock node error\n", __func__);
+ goto err_clk;
+ }
+
+ cmux_clk->clk_per_pll = of_property_count_strings(clkspec.np,
+ "clock-output-names");
+ of_node_put(clkspec.np);
+
+ node = of_find_compatible_node(NULL, NULL, "fsl,p4080-clockgen");
+ if (node && (offset >= 0x80))
+ cmux_clk->flags = CLKSEL_ADJUST;
+
+ rc = of_property_read_string_index(np, "clock-output-names",
+ 0, &clk_name);
+ if (rc) {
+ pr_err("%s: read clock names error\n", np->name);
+ goto err_clk;
+ }
+
+ init.name = clk_name;
+ init.ops = &cmux_ops;
+ init.parent_names = parent_names;
+ init.num_parents = count;
+ init.flags = 0;
+ cmux_clk->hw.init = &init;
+
+ clk = clk_register(NULL, &cmux_clk->hw);
+ if (IS_ERR(clk)) {
+ pr_err("%s: could not register clock\n", clk_name);
+ goto err_clk;
+ }
+
+ rc = of_clk_add_provider(np, of_clk_src_simple_get, clk);
+ if (rc) {
+ pr_err("Could not register clock provider for node:%s\n",
+ np->name);
+ goto err_clk;
+ }
+ goto err_name;
+
+err_clk:
+ kfree(cmux_clk);
+err_name:
+ /* free *_names because they are reallocated when registered */
+ kfree(parent_names);
+}
+
+static void __init core_pll_init(struct device_node *np)
+{
+ u32 mult;
+ int i, rc, count;
+ const char *clk_name, *parent_name;
+ struct clk_onecell_data *onecell_data;
+ struct clk **subclks;
+ void __iomem *base;
+
+ base = of_iomap(np, 0);
+ if (!base) {
+ pr_err("clk-qoriq: iomap error\n");
+ return;
+ }
+
+ /* get the multiple of PLL */
+ mult = ioread32be(base);
+
+ /* check if this PLL is disabled */
+ if (mult & PLL_KILL) {
+ pr_debug("PLL:%s is disabled\n", np->name);
+ goto err_map;
+ }
+ mult = (mult >> 1) & 0x3f;
+
+ parent_name = of_clk_get_parent_name(np, 0);
+ if (!parent_name) {
+ pr_err("PLL: %s must have a parent\n", np->name);
+ goto err_map;
+ }
+
+ count = of_property_count_strings(np, "clock-output-names");
+ if (count < 0 || count > 4) {
+ pr_err("%s: clock is not supported\n", np->name);
+ goto err_map;
+ }
+
+ subclks = kzalloc(sizeof(struct clk *) * count, GFP_KERNEL);
+ if (!subclks) {
+ pr_err("%s: could not allocate subclks\n", __func__);
+ goto err_map;
+ }
+
+ onecell_data = kzalloc(sizeof(struct clk_onecell_data), GFP_KERNEL);
+ if (!onecell_data) {
+ pr_err("%s: could not allocate onecell_data\n", __func__);
+ goto err_clks;
+ }
+
+ for (i = 0; i < count; i++) {
+ rc = of_property_read_string_index(np, "clock-output-names",
+ i, &clk_name);
+ if (rc) {
+ pr_err("%s: could not get clock names\n", np->name);
+ goto err_cell;
+ }
+
+ /*
+ * when count == 4, there are 4 output clocks:
+ * /1, /2, /3, /4 respectively
+ * when count < 4, there are at least 2 output clocks:
+ * /1, /2, (/4, if count == 3) respectively.
+ */
+ if (count == 4)
+ subclks[i] = clk_register_fixed_factor(NULL, clk_name,
+ parent_name, 0, mult, 1 + i);
+ else
+
+ subclks[i] = clk_register_fixed_factor(NULL, clk_name,
+ parent_name, 0, mult, 1 << i);
+
+ if (IS_ERR(subclks[i])) {
+ pr_err("%s: could not register clock\n", clk_name);
+ goto err_cell;
+ }
+ }
+
+ onecell_data->clks = subclks;
+ onecell_data->clk_num = count;
+
+ rc = of_clk_add_provider(np, of_clk_src_onecell_get, onecell_data);
+ if (rc) {
+ pr_err("Could not register clk provider for node:%s\n",
+ np->name);
+ goto err_cell;
+ }
+
+ iounmap(base);
+ return;
+err_cell:
+ kfree(onecell_data);
+err_clks:
+ kfree(subclks);
+err_map:
+ iounmap(base);
+}
+
+static void __init sysclk_init(struct device_node *node)
+{
+ struct clk *clk;
+ const char *clk_name = node->name;
+ struct device_node *np = of_get_parent(node);
+ u32 rate;
+
+ if (!np) {
+ pr_err("qoriq-clk: could not get parent node\n");
+ return;
+ }
+
+ if (of_property_read_u32(np, "clock-frequency", &rate)) {
+ of_node_put(node);
+ return;
+ }
+
+ of_property_read_string(np, "clock-output-names", &clk_name);
+
+ clk = clk_register_fixed_rate(NULL, clk_name, NULL, CLK_IS_ROOT, rate);
+ if (!IS_ERR(clk))
+ of_clk_add_provider(np, of_clk_src_simple_get, clk);
+}
+CLK_OF_DECLARE(qoriq_sysclk_1, "fsl,qoriq-sysclk-1.0", sysclk_init);
+CLK_OF_DECLARE(qoriq_sysclk_2, "fsl,qoriq-sysclk-2.0", sysclk_init);
+CLK_OF_DECLARE(qoriq_core_pll_1, "fsl,qoriq-core-pll-1.0", core_pll_init);
+CLK_OF_DECLARE(qoriq_core_pll_2, "fsl,qoriq-core-pll-2.0", core_pll_init);
+CLK_OF_DECLARE(qoriq_core_mux_1, "fsl,qoriq-core-mux-1.0", core_mux_init);
+CLK_OF_DECLARE(qoriq_core_mux_2, "fsl,qoriq-core-mux-2.0", core_mux_init);
config PPC_CORENET_CPUFREQ
tristate "CPU frequency scaling driver for Freescale E500MC SoCs"
depends on PPC_E500MC && OF && COMMON_CLK
- select CLK_PPC_CORENET
+ select CLK_QORIQ
help
This adds the CPUFreq driver support for Freescale e500mc,
e5500 and e6500 series SoCs which are capable of changing
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff