diff options
Diffstat (limited to 'arch/arm/mach-s3c2416/clock.c')
-rw-r--r-- | arch/arm/mach-s3c2416/clock.c | 118 |
1 files changed, 77 insertions, 41 deletions
diff --git a/arch/arm/mach-s3c2416/clock.c b/arch/arm/mach-s3c2416/clock.c index 21a5e81f0ab5..59f54d1d7f8b 100644 --- a/arch/arm/mach-s3c2416/clock.c +++ b/arch/arm/mach-s3c2416/clock.c @@ -21,7 +21,6 @@ #include <plat/cpu.h> #include <plat/cpu-freq.h> -#include <plat/pll6553x.h> #include <plat/pll.h> #include <asm/mach/map.h> @@ -29,6 +28,14 @@ #include <mach/regs-clock.h> #include <mach/regs-s3c2443-clock.h> +/* armdiv + * + * this clock is sourced from msysclk and can have a number of + * divider values applied to it to then be fed into armclk. + * The real clock definition is done in s3c2443-clock.c, + * only the armdiv divisor table must be defined here. +*/ + static unsigned int armdiv[8] = { [0] = 1, [1] = 2, @@ -38,6 +45,32 @@ static unsigned int armdiv[8] = { [7] = 8, }; +static struct clksrc_clk hsspi_eplldiv = { + .clk = { + .name = "hsspi-eplldiv", + .parent = &clk_esysclk.clk, + .ctrlbit = (1 << 14), + .enable = s3c2443_clkcon_enable_s, + }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 24 }, +}; + +static struct clk *hsspi_sources[] = { + [0] = &hsspi_eplldiv.clk, + [1] = NULL, /* to fix */ +}; + +static struct clksrc_clk hsspi_mux = { + .clk = { + .name = "hsspi-if", + }, + .sources = &(struct clksrc_sources) { + .sources = hsspi_sources, + .nr_sources = ARRAY_SIZE(hsspi_sources), + }, + .reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 18 }, +}; + static struct clksrc_clk hsmmc_div[] = { [0] = { .clk = { @@ -57,39 +90,38 @@ static struct clksrc_clk hsmmc_div[] = { }, }; -static struct clksrc_clk hsmmc_mux[] = { - [0] = { - .clk = { - .name = "hsmmc-if", - .devname = "s3c-sdhci.0", - .ctrlbit = (1 << 6), - .enable = s3c2443_clkcon_enable_s, - }, - .sources = &(struct clksrc_sources) { - .nr_sources = 2, - .sources = (struct clk *[]) { - [0] = &hsmmc_div[0].clk, - [1] = NULL, /* to fix */ - }, - }, - .reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 16 }, +static struct clksrc_clk hsmmc_mux0 = { + .clk = { + .name = "hsmmc-if", + .devname = "s3c-sdhci.0", + .ctrlbit = (1 << 6), + .enable = s3c2443_clkcon_enable_s, }, - [1] = { - .clk = { - .name = "hsmmc-if", - .devname = "s3c-sdhci.1", - .ctrlbit = (1 << 12), - .enable = s3c2443_clkcon_enable_s, + .sources = &(struct clksrc_sources) { + .nr_sources = 2, + .sources = (struct clk * []) { + [0] = &hsmmc_div[0].clk, + [1] = NULL, /* to fix */ }, - .sources = &(struct clksrc_sources) { - .nr_sources = 2, - .sources = (struct clk *[]) { - [0] = &hsmmc_div[1].clk, - [1] = NULL, /* to fix */ - }, + }, + .reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 16 }, +}; + +static struct clksrc_clk hsmmc_mux1 = { + .clk = { + .name = "hsmmc-if", + .devname = "s3c-sdhci.1", + .ctrlbit = (1 << 12), + .enable = s3c2443_clkcon_enable_s, + }, + .sources = &(struct clksrc_sources) { + .nr_sources = 2, + .sources = (struct clk * []) { + [0] = &hsmmc_div[1].clk, + [1] = NULL, /* to fix */ }, - .reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 17 }, }, + .reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 17 }, }; static struct clk hsmmc0_clk = { @@ -100,24 +132,25 @@ static struct clk hsmmc0_clk = { .ctrlbit = S3C2416_HCLKCON_HSMMC0, }; -static inline unsigned int s3c2416_fclk_div(unsigned long clkcon0) -{ - clkcon0 &= 7 << S3C2443_CLKDIV0_ARMDIV_SHIFT; - - return armdiv[clkcon0 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]; -} - void __init_or_cpufreq s3c2416_setup_clocks(void) { - s3c2443_common_setup_clocks(s3c2416_get_pll, s3c2416_fclk_div); + s3c2443_common_setup_clocks(s3c2416_get_pll); } static struct clksrc_clk *clksrcs[] __initdata = { + &hsspi_eplldiv, + &hsspi_mux, &hsmmc_div[0], &hsmmc_div[1], - &hsmmc_mux[0], - &hsmmc_mux[1], + &hsmmc_mux0, + &hsmmc_mux1, +}; + +static struct clk_lookup s3c2416_clk_lookup[] = { + CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.0", &hsmmc0_clk), + CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.2", &hsmmc_mux0.clk), + CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.2", &hsmmc_mux1.clk), }; void __init s3c2416_init_clocks(int xtal) @@ -131,12 +164,15 @@ void __init s3c2416_init_clocks(int xtal) clk_epll.parent = &clk_epllref.clk; - s3c2443_common_init_clocks(xtal, s3c2416_get_pll, s3c2416_fclk_div); + s3c2443_common_init_clocks(xtal, s3c2416_get_pll, + armdiv, ARRAY_SIZE(armdiv), + S3C2416_CLKDIV0_ARMDIV_MASK); for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++) s3c_register_clksrc(clksrcs[ptr], 1); s3c24xx_register_clock(&hsmmc0_clk); + clkdev_add_table(s3c2416_clk_lookup, ARRAY_SIZE(s3c2416_clk_lookup)); s3c_pwmclk_init(); |