diff options
Diffstat (limited to 'drivers/clk/samsung/clk-exynos4.c')
| -rw-r--r-- | drivers/clk/samsung/clk-exynos4.c | 105 |
1 files changed, 61 insertions, 44 deletions
diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c index 43207257a9cc..cc5c1644c41c 100644 --- a/drivers/clk/samsung/clk-exynos4.c +++ b/drivers/clk/samsung/clk-exynos4.c @@ -5,13 +5,13 @@ * Author: Thomas Abraham <thomas.ab@samsung.com> * * Common Clock Framework support for all Exynos4 SoCs. -*/ + */ #include <dt-bindings/clock/exynos4.h> #include <linux/slab.h> -#include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/io.h> +#include <linux/mod_devicetable.h> #include <linux/of.h> #include <linux/of_address.h> @@ -135,6 +135,9 @@ #define PWR_CTRL1_USE_CORE1_WFI (1 << 1) #define PWR_CTRL1_USE_CORE0_WFI (1 << 0) +/* NOTE: Must be equal to the last clock ID increased by one */ +#define CLKS_NR (CLK_DIV_CORE2 + 1) + /* the exynos4 soc type */ enum exynos4_soc { EXYNOS4210, @@ -1037,19 +1040,20 @@ static unsigned long __init exynos4_get_xom(void) static void __init exynos4_clk_register_finpll(struct samsung_clk_provider *ctx) { struct samsung_fixed_rate_clock fclk; - struct clk *clk; - unsigned long finpll_f = 24000000; + unsigned long finpll_f; + unsigned int parent; char *parent_name; unsigned int xom = exynos4_get_xom(); parent_name = xom & 1 ? "xusbxti" : "xxti"; - clk = clk_get(NULL, parent_name); - if (IS_ERR(clk)) { + parent = xom & 1 ? CLK_XUSBXTI : CLK_XXTI; + + finpll_f = clk_hw_get_rate(ctx->clk_data.hws[parent]); + if (!finpll_f) { 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); + finpll_f = 24000000; } fclk.id = CLK_FIN_PLL; @@ -1249,17 +1253,59 @@ static const struct exynos_cpuclk_cfg_data e4412_armclk_d[] __initconst = { static const struct samsung_cpu_clock exynos4210_cpu_clks[] __initconst = { CPU_CLK(CLK_ARM_CLK, "armclk", CLK_MOUT_APLL, CLK_SCLK_MPLL, - CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1, 0x14200, e4210_armclk_d), + CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1, 0x14000, + CPUCLK_LAYOUT_E4210, e4210_armclk_d), }; static const struct samsung_cpu_clock exynos4212_cpu_clks[] __initconst = { CPU_CLK(CLK_ARM_CLK, "armclk", CLK_MOUT_APLL, CLK_MOUT_MPLL_USER_C, - CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1, 0x14200, e4212_armclk_d), + CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1, 0x14000, + CPUCLK_LAYOUT_E4210, e4212_armclk_d), }; static const struct samsung_cpu_clock exynos4412_cpu_clks[] __initconst = { CPU_CLK(CLK_ARM_CLK, "armclk", CLK_MOUT_APLL, CLK_MOUT_MPLL_USER_C, - CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1, 0x14200, e4412_armclk_d), + CLK_CPU_NEEDS_DEBUG_ALT_DIV | CLK_CPU_HAS_DIV1, 0x14000, + CPUCLK_LAYOUT_E4210, e4412_armclk_d), +}; + +static const struct samsung_cmu_info cmu_info_exynos4 __initconst = { + .mux_clks = exynos4_mux_clks, + .nr_mux_clks = ARRAY_SIZE(exynos4_mux_clks), + .div_clks = exynos4_div_clks, + .nr_div_clks = ARRAY_SIZE(exynos4_div_clks), + .gate_clks = exynos4_gate_clks, + .nr_gate_clks = ARRAY_SIZE(exynos4_gate_clks), + .fixed_factor_clks = exynos4_fixed_factor_clks, + .nr_fixed_factor_clks = ARRAY_SIZE(exynos4_fixed_factor_clks), + .fixed_clks = exynos4_fixed_rate_clks, + .nr_fixed_clks = ARRAY_SIZE(exynos4_fixed_rate_clks), +}; + +static const struct samsung_cmu_info cmu_info_exynos4210 __initconst = { + .mux_clks = exynos4210_mux_clks, + .nr_mux_clks = ARRAY_SIZE(exynos4210_mux_clks), + .div_clks = exynos4210_div_clks, + .nr_div_clks = ARRAY_SIZE(exynos4210_div_clks), + .gate_clks = exynos4210_gate_clks, + .nr_gate_clks = ARRAY_SIZE(exynos4210_gate_clks), + .fixed_factor_clks = exynos4210_fixed_factor_clks, + .nr_fixed_factor_clks = ARRAY_SIZE(exynos4210_fixed_factor_clks), + .fixed_clks = exynos4210_fixed_rate_clks, + .nr_fixed_clks = ARRAY_SIZE(exynos4210_fixed_rate_clks), + .cpu_clks = exynos4210_cpu_clks, + .nr_cpu_clks = ARRAY_SIZE(exynos4210_cpu_clks), +}; + +static const struct samsung_cmu_info cmu_info_exynos4x12 __initconst = { + .mux_clks = exynos4x12_mux_clks, + .nr_mux_clks = ARRAY_SIZE(exynos4x12_mux_clks), + .div_clks = exynos4x12_div_clks, + .nr_div_clks = ARRAY_SIZE(exynos4x12_div_clks), + .gate_clks = exynos4x12_gate_clks, + .nr_gate_clks = ARRAY_SIZE(exynos4x12_gate_clks), + .fixed_factor_clks = exynos4x12_fixed_factor_clks, + .nr_fixed_factor_clks = ARRAY_SIZE(exynos4x12_fixed_factor_clks), }; /* register exynos4 clocks */ @@ -1275,7 +1321,7 @@ static void __init exynos4_clk_init(struct device_node *np, if (!reg_base) panic("%s: failed to map registers\n", __func__); - ctx = samsung_clk_init(NULL, reg_base, CLK_NR_CLKS); + ctx = samsung_clk_init(NULL, reg_base, CLKS_NR); hws = ctx->clk_data.hws; samsung_clk_of_register_fixed_ext(ctx, exynos4_fixed_rate_ext_clks, @@ -1315,41 +1361,12 @@ static void __init exynos4_clk_init(struct device_node *np, ARRAY_SIZE(exynos4x12_plls)); } - samsung_clk_register_fixed_rate(ctx, exynos4_fixed_rate_clks, - ARRAY_SIZE(exynos4_fixed_rate_clks)); - samsung_clk_register_mux(ctx, exynos4_mux_clks, - ARRAY_SIZE(exynos4_mux_clks)); - samsung_clk_register_div(ctx, exynos4_div_clks, - ARRAY_SIZE(exynos4_div_clks)); - samsung_clk_register_gate(ctx, exynos4_gate_clks, - ARRAY_SIZE(exynos4_gate_clks)); - samsung_clk_register_fixed_factor(ctx, exynos4_fixed_factor_clks, - ARRAY_SIZE(exynos4_fixed_factor_clks)); + samsung_cmu_register_clocks(ctx, &cmu_info_exynos4); if (exynos4_soc == EXYNOS4210) { - samsung_clk_register_fixed_rate(ctx, exynos4210_fixed_rate_clks, - ARRAY_SIZE(exynos4210_fixed_rate_clks)); - samsung_clk_register_mux(ctx, exynos4210_mux_clks, - ARRAY_SIZE(exynos4210_mux_clks)); - samsung_clk_register_div(ctx, exynos4210_div_clks, - ARRAY_SIZE(exynos4210_div_clks)); - samsung_clk_register_gate(ctx, exynos4210_gate_clks, - ARRAY_SIZE(exynos4210_gate_clks)); - samsung_clk_register_fixed_factor(ctx, - exynos4210_fixed_factor_clks, - ARRAY_SIZE(exynos4210_fixed_factor_clks)); - samsung_clk_register_cpu(ctx, exynos4210_cpu_clks, - ARRAY_SIZE(exynos4210_cpu_clks)); + samsung_cmu_register_clocks(ctx, &cmu_info_exynos4210); } else { - samsung_clk_register_mux(ctx, exynos4x12_mux_clks, - ARRAY_SIZE(exynos4x12_mux_clks)); - samsung_clk_register_div(ctx, exynos4x12_div_clks, - ARRAY_SIZE(exynos4x12_div_clks)); - samsung_clk_register_gate(ctx, exynos4x12_gate_clks, - ARRAY_SIZE(exynos4x12_gate_clks)); - samsung_clk_register_fixed_factor(ctx, - exynos4x12_fixed_factor_clks, - ARRAY_SIZE(exynos4x12_fixed_factor_clks)); + samsung_cmu_register_clocks(ctx, &cmu_info_exynos4x12); if (soc == EXYNOS4412) samsung_clk_register_cpu(ctx, exynos4412_cpu_clks, ARRAY_SIZE(exynos4412_cpu_clks)); |