diff options
Diffstat (limited to 'arch/arm/mach-s3c2443/clock.c')
-rw-r--r-- | arch/arm/mach-s3c2443/clock.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c index f854e7385e3c..1df8429242b8 100644 --- a/arch/arm/mach-s3c2443/clock.c +++ b/arch/arm/mach-s3c2443/clock.c | |||
@@ -39,6 +39,8 @@ | |||
39 | 39 | ||
40 | #include <mach/regs-s3c2443-clock.h> | 40 | #include <mach/regs-s3c2443-clock.h> |
41 | 41 | ||
42 | #include <plat/cpu-freq.h> | ||
43 | |||
42 | #include <plat/s3c2443.h> | 44 | #include <plat/s3c2443.h> |
43 | #include <plat/clock.h> | 45 | #include <plat/clock.h> |
44 | #include <plat/cpu.h> | 46 | #include <plat/cpu.h> |
@@ -1011,22 +1013,20 @@ static struct clk *clks[] __initdata = { | |||
1011 | &clk_prediv, | 1013 | &clk_prediv, |
1012 | }; | 1014 | }; |
1013 | 1015 | ||
1014 | void __init s3c2443_init_clocks(int xtal) | 1016 | void __init_or_cpufreq s3c2443_setup_clocks(void) |
1015 | { | 1017 | { |
1016 | unsigned long epllcon = __raw_readl(S3C2443_EPLLCON); | ||
1017 | unsigned long mpllcon = __raw_readl(S3C2443_MPLLCON); | 1018 | unsigned long mpllcon = __raw_readl(S3C2443_MPLLCON); |
1018 | unsigned long clkdiv0 = __raw_readl(S3C2443_CLKDIV0); | 1019 | unsigned long clkdiv0 = __raw_readl(S3C2443_CLKDIV0); |
1020 | struct clk *xtal_clk; | ||
1021 | unsigned long xtal; | ||
1019 | unsigned long pll; | 1022 | unsigned long pll; |
1020 | unsigned long fclk; | 1023 | unsigned long fclk; |
1021 | unsigned long hclk; | 1024 | unsigned long hclk; |
1022 | unsigned long pclk; | 1025 | unsigned long pclk; |
1023 | struct clk *clkp; | ||
1024 | int ret; | ||
1025 | int ptr; | ||
1026 | 1026 | ||
1027 | /* s3c2443 parents h and p clocks from prediv */ | 1027 | xtal_clk = clk_get(NULL, "xtal"); |
1028 | clk_h.parent = &clk_prediv; | 1028 | xtal = clk_get_rate(xtal_clk); |
1029 | clk_p.parent = &clk_prediv; | 1029 | clk_put(xtal_clk); |
1030 | 1030 | ||
1031 | pll = s3c2443_get_mpll(mpllcon, xtal); | 1031 | pll = s3c2443_get_mpll(mpllcon, xtal); |
1032 | clk_msysclk.rate = pll; | 1032 | clk_msysclk.rate = pll; |
@@ -1036,13 +1036,29 @@ void __init s3c2443_init_clocks(int xtal) | |||
1036 | hclk /= s3c2443_get_hdiv(clkdiv0); | 1036 | hclk /= s3c2443_get_hdiv(clkdiv0); |
1037 | pclk = hclk / ((clkdiv0 & S3C2443_CLKDIV0_HALF_PCLK) ? 2 : 1); | 1037 | pclk = hclk / ((clkdiv0 & S3C2443_CLKDIV0_HALF_PCLK) ? 2 : 1); |
1038 | 1038 | ||
1039 | s3c24xx_setup_clocks(xtal, fclk, hclk, pclk); | 1039 | s3c24xx_setup_clocks(fclk, hclk, pclk); |
1040 | 1040 | ||
1041 | printk("S3C2443: mpll %s %ld.%03ld MHz, cpu %ld.%03ld MHz, mem %ld.%03ld MHz, pclk %ld.%03ld MHz\n", | 1041 | printk("S3C2443: mpll %s %ld.%03ld MHz, cpu %ld.%03ld MHz, mem %ld.%03ld MHz, pclk %ld.%03ld MHz\n", |
1042 | (mpllcon & S3C2443_PLLCON_OFF) ? "off":"on", | 1042 | (mpllcon & S3C2443_PLLCON_OFF) ? "off":"on", |
1043 | print_mhz(pll), print_mhz(fclk), | 1043 | print_mhz(pll), print_mhz(fclk), |
1044 | print_mhz(hclk), print_mhz(pclk)); | 1044 | print_mhz(hclk), print_mhz(pclk)); |
1045 | 1045 | ||
1046 | s3c24xx_setup_clocks(fclk, hclk, pclk); | ||
1047 | } | ||
1048 | |||
1049 | void __init s3c2443_init_clocks(int xtal) | ||
1050 | { | ||
1051 | struct clk *clkp; | ||
1052 | unsigned long epllcon = __raw_readl(S3C2443_EPLLCON); | ||
1053 | int ret; | ||
1054 | int ptr; | ||
1055 | |||
1056 | /* s3c2443 parents h and p clocks from prediv */ | ||
1057 | clk_h.parent = &clk_prediv; | ||
1058 | clk_p.parent = &clk_prediv; | ||
1059 | |||
1060 | s3c24xx_register_baseclocks(xtal); | ||
1061 | s3c2443_setup_clocks(); | ||
1046 | s3c2443_clk_initparents(); | 1062 | s3c2443_clk_initparents(); |
1047 | 1063 | ||
1048 | for (ptr = 0; ptr < ARRAY_SIZE(clks); ptr++) { | 1064 | for (ptr = 0; ptr < ARRAY_SIZE(clks); ptr++) { |
@@ -1056,7 +1072,6 @@ void __init s3c2443_init_clocks(int xtal) | |||
1056 | } | 1072 | } |
1057 | 1073 | ||
1058 | clk_epll.rate = s3c2443_get_epll(epllcon, xtal); | 1074 | clk_epll.rate = s3c2443_get_epll(epllcon, xtal); |
1059 | |||
1060 | clk_usb_bus.parent = &clk_usb_bus_host; | 1075 | clk_usb_bus.parent = &clk_usb_bus_host; |
1061 | 1076 | ||
1062 | /* ensure usb bus clock is within correct rate of 48MHz */ | 1077 | /* ensure usb bus clock is within correct rate of 48MHz */ |