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| author | Benoît Thébaudeau <benoit.thebaudeau@advansee.com> | 2012-08-21 11:06:03 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2012-09-06 14:23:30 +0200 |
| commit | 0dc7b82e4ec7cb95738aebd368d06a5cd8e37595 (patch) | |
| tree | 216c89ad4a1d89ce4b78203a1d00b7f822a8a1d6 /arch/arm | |
| parent | 97ed12cedf9cd47ddc4553c3fa9f3e8f92cba8c3 (diff) | |
| download | u-boot-imx-0dc7b82e4ec7cb95738aebd368d06a5cd8e37595.zip u-boot-imx-0dc7b82e4ec7cb95738aebd368d06a5cd8e37595.tar.gz u-boot-imx-0dc7b82e4ec7cb95738aebd368d06a5cd8e37595.tar.bz2 | |
mx31: Define default SoC input clock frequencies
Define default SoC input clock frequencies for i.MX31 in order to get rid of
duplicated definitions.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Helmut Raiger <helmut.raiger@hale.at>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/arm1136/mx31/generic.c | 4 | ||||
| -rw-r--r-- | arch/arm/cpu/arm1136/mx31/timer.c | 16 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx31/clock.h | 14 |
3 files changed, 24 insertions, 10 deletions
diff --git a/arch/arm/cpu/arm1136/mx31/generic.c b/arch/arm/cpu/arm1136/mx31/generic.c index 3a35bfa..93f429c 100644 --- a/arch/arm/cpu/arm1136/mx31/generic.c +++ b/arch/arm/cpu/arm1136/mx31/generic.c @@ -49,9 +49,9 @@ static u32 mx31_get_mpl_dpdgck_clk(void) u32 infreq; if ((readl(CCM_CCMR) & CCMR_PRCS_MASK) == CCMR_FPM) - infreq = CONFIG_MX31_CLK32 * 1024; + infreq = MXC_CLK32 * 1024; else - infreq = CONFIG_MX31_HCLK_FREQ; + infreq = MXC_HCLK; return mx31_decode_pll(readl(CCM_MPCTL), infreq); } diff --git a/arch/arm/cpu/arm1136/mx31/timer.c b/arch/arm/cpu/arm1136/mx31/timer.c index 72081a8..36266da 100644 --- a/arch/arm/cpu/arm1136/mx31/timer.c +++ b/arch/arm/cpu/arm1136/mx31/timer.c @@ -23,6 +23,7 @@ #include <common.h> #include <asm/arch/imx-regs.h> +#include <asm/arch/clock.h> #include <div64.h> #include <watchdog.h> #include <asm/io.h> @@ -53,28 +54,27 @@ DECLARE_GLOBAL_DATA_PTR; static inline unsigned long long tick_to_time(unsigned long long tick) { tick *= CONFIG_SYS_HZ; - do_div(tick, CONFIG_MX31_CLK32); + do_div(tick, MXC_CLK32); return tick; } static inline unsigned long long time_to_tick(unsigned long long time) { - time *= CONFIG_MX31_CLK32; + time *= MXC_CLK32; do_div(time, CONFIG_SYS_HZ); return time; } static inline unsigned long long us_to_tick(unsigned long long us) { - us = us * CONFIG_MX31_CLK32 + 999999; + us = us * MXC_CLK32 + 999999; do_div(us, 1000000); return us; } #else /* ~2% error */ -#define TICK_PER_TIME ((CONFIG_MX31_CLK32 + CONFIG_SYS_HZ / 2) \ - / CONFIG_SYS_HZ) -#define US_PER_TICK (1000000 / CONFIG_MX31_CLK32) +#define TICK_PER_TIME ((MXC_CLK32 + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ) +#define US_PER_TICK (1000000 / MXC_CLK32) static inline unsigned long long tick_to_time(unsigned long long tick) { @@ -128,7 +128,7 @@ ulong get_timer_masked(void) { /* * get_ticks() returns a long long (64 bit), it wraps in - * 2^64 / CONFIG_MX31_CLK32 = 2^64 / 2^15 = 2^49 ~ 5 * 10^14 (s) ~ + * 2^64 / MXC_CLK32 = 2^64 / 2^15 = 2^49 ~ 5 * 10^14 (s) ~ * 5 * 10^9 days... and get_ticks() * CONFIG_SYS_HZ wraps in * 5 * 10^6 days - long enough. */ @@ -159,7 +159,7 @@ void __udelay(unsigned long usec) */ ulong get_tbclk(void) { - return CONFIG_MX31_CLK32; + return MXC_CLK32; } void reset_cpu(ulong addr) diff --git a/arch/arm/include/asm/arch-mx31/clock.h b/arch/arm/include/asm/arch-mx31/clock.h index 852c19c..9468b45 100644 --- a/arch/arm/include/asm/arch-mx31/clock.h +++ b/arch/arm/include/asm/arch-mx31/clock.h @@ -24,6 +24,20 @@ #ifndef __ASM_ARCH_CLOCK_H #define __ASM_ARCH_CLOCK_H +#include <common.h> + +#ifdef CONFIG_MX31_HCLK_FREQ +#define MXC_HCLK CONFIG_MX31_HCLK_FREQ +#else +#define MXC_HCLK 26000000 +#endif + +#ifdef CONFIG_MX31_CLK32 +#define MXC_CLK32 CONFIG_MX31_CLK32 +#else +#define MXC_CLK32 32768 +#endif + enum mxc_clock { MXC_ARM_CLK, MXC_IPG_CLK, |