diff options
Diffstat (limited to 'drivers/clk/samsung')
| -rw-r--r-- | drivers/clk/samsung/clk-exynos4.c | 93 | ||||
| -rw-r--r-- | drivers/clk/samsung/clk-exynos5250.c | 1 | ||||
| -rw-r--r-- | drivers/clk/samsung/clk-exynos5440.c | 1 | ||||
| -rw-r--r-- | drivers/clk/samsung/clk.h | 2 |
4 files changed, 42 insertions, 55 deletions
diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c index 71046694d9d..d0940e69d03 100644 --- a/drivers/clk/samsung/clk-exynos4.c +++ b/drivers/clk/samsung/clk-exynos4.c @@ -16,7 +16,6 @@ #include <linux/of.h> #include <linux/of_address.h> -#include <plat/cpu.h> #include "clk.h" #include "clk-pll.h" @@ -910,16 +909,6 @@ struct samsung_gate_clock exynos4x12_gate_clks[] __initdata = { CLK_IGNORE_UNUSED, 0), }; -#ifdef CONFIG_OF -static struct of_device_id exynos4_clk_ids[] __initdata = { - { .compatible = "samsung,exynos4210-clock", - .data = (void *)EXYNOS4210, }, - { .compatible = "samsung,exynos4412-clock", - .data = (void *)EXYNOS4X12, }, - { }, -}; -#endif - /* * The parent of the fin_pll clock is selected by the XOM[0] bit. This bit * resides in chipid register space, outside of the clock controller memory @@ -927,33 +916,40 @@ static struct of_device_id exynos4_clk_ids[] __initdata = { * controller is first remapped and the value of XOM[0] bit is read to * determine the parent clock. */ -static void __init exynos4_clk_register_finpll(void) +static unsigned long exynos4_get_xom(void) { - struct samsung_fixed_rate_clock fclk; + unsigned long xom = 0; + void __iomem *chipid_base; struct device_node *np; - struct clk *clk; - void __iomem *chipid_base = S5P_VA_CHIPID; - unsigned long xom, finpll_f = 24000000; - char *parent_name; np = of_find_compatible_node(NULL, NULL, "samsung,exynos4210-chipid"); - if (np) + if (np) { chipid_base = of_iomap(np, 0); - if (chipid_base) { - xom = readl(chipid_base + 8); - parent_name = xom & 1 ? "xusbxti" : "xxti"; - clk = clk_get(NULL, parent_name); - if (IS_ERR(clk)) { - pr_err("%s: failed to lookup parent clock %s, assuming " - "fin_pll clock frequency is 24MHz\n", __func__, - parent_name); - } else { - finpll_f = clk_get_rate(clk); - } + if (chipid_base) + xom = readl(chipid_base + 8); + + iounmap(chipid_base); + } + + return xom; +} + +static void __init exynos4_clk_register_finpll(unsigned long xom) +{ + struct samsung_fixed_rate_clock fclk; + struct clk *clk; + unsigned long finpll_f = 24000000; + char *parent_name; + + parent_name = xom & 1 ? "xusbxti" : "xxti"; + clk = clk_get(NULL, parent_name); + if (IS_ERR(clk)) { + pr_err("%s: failed to lookup parent clock %s, assuming " + "fin_pll clock frequency is 24MHz\n", __func__, + parent_name); } else { - pr_err("%s: failed to map chipid registers, assuming " - "fin_pll clock frequency is 24MHz\n", __func__); + finpll_f = clk_get_rate(clk); } fclk.id = fin_pll; @@ -963,8 +959,6 @@ static void __init exynos4_clk_register_finpll(void) fclk.fixed_rate = finpll_f; samsung_clk_register_fixed_rate(&fclk, 1); - if (np) - iounmap(chipid_base); } /* @@ -988,28 +982,14 @@ static __initdata struct of_device_id ext_clk_match[] = { }; /* register exynos4 clocks */ -void __init exynos4_clk_init(struct device_node *np) +void __init exynos4_clk_init(struct device_node *np, enum exynos4_soc exynos4_soc, void __iomem *reg_base, unsigned long xom) { - void __iomem *reg_base; struct clk *apll, *mpll, *epll, *vpll; - u32 exynos4_soc; if (np) { - const struct of_device_id *match; - match = of_match_node(exynos4_clk_ids, np); - exynos4_soc = (u32)match->data; - reg_base = of_iomap(np, 0); if (!reg_base) panic("%s: failed to map registers\n", __func__); - } else { - reg_base = S5P_VA_CMU; - if (soc_is_exynos4210()) - exynos4_soc = EXYNOS4210; - else if (soc_is_exynos4212() || soc_is_exynos4412()) - exynos4_soc = EXYNOS4X12; - else - panic("%s: unable to determine soc\n", __func__); } if (exynos4_soc == EXYNOS4210) @@ -1026,7 +1006,7 @@ void __init exynos4_clk_init(struct device_node *np) ARRAY_SIZE(exynos4_fixed_rate_ext_clks), ext_clk_match); - exynos4_clk_register_finpll(); + exynos4_clk_register_finpll(xom); if (exynos4_soc == EXYNOS4210) { apll = samsung_clk_register_pll45xx("fout_apll", "fin_pll", @@ -1087,5 +1067,16 @@ void __init exynos4_clk_init(struct device_node *np) _get_rate("sclk_epll"), _get_rate("sclk_vpll"), _get_rate("arm_clk")); } -CLK_OF_DECLARE(exynos4210_clk, "samsung,exynos4210-clock", exynos4_clk_init); -CLK_OF_DECLARE(exynos4412_clk, "samsung,exynos4412-clock", exynos4_clk_init); + + +static void __init exynos4210_clk_init(struct device_node *np) +{ + exynos4_clk_init(np, EXYNOS4210, NULL, exynos4_get_xom()); +} +CLK_OF_DECLARE(exynos4210_clk, "samsung,exynos4210-clock", exynos4210_clk_init); + +static void __init exynos4412_clk_init(struct device_node *np) +{ + exynos4_clk_init(np, EXYNOS4X12, NULL, exynos4_get_xom()); +} +CLK_OF_DECLARE(exynos4412_clk, "samsung,exynos4412-clock", exynos4412_clk_init); diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c index bb54606ff03..5c97e75924a 100644 --- a/drivers/clk/samsung/clk-exynos5250.c +++ b/drivers/clk/samsung/clk-exynos5250.c @@ -16,7 +16,6 @@ #include <linux/of.h> #include <linux/of_address.h> -#include <plat/cpu.h> #include "clk.h" #include "clk-pll.h" diff --git a/drivers/clk/samsung/clk-exynos5440.c b/drivers/clk/samsung/clk-exynos5440.c index a0a094c06f1..7d5434167a9 100644 --- a/drivers/clk/samsung/clk-exynos5440.c +++ b/drivers/clk/samsung/clk-exynos5440.c @@ -15,7 +15,6 @@ #include <linux/of.h> #include <linux/of_address.h> -#include <plat/cpu.h> #include "clk.h" #include "clk-pll.h" diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h index 10b2111f0c0..e4ad6ea9aa7 100644 --- a/drivers/clk/samsung/clk.h +++ b/drivers/clk/samsung/clk.h @@ -20,8 +20,6 @@ #include <linux/of.h> #include <linux/of_address.h> -#include <mach/map.h> - /** * struct samsung_clock_alias: information about mux clock * @id: platform specific id of the clock. |