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| author | Eric Miao <eric.miao@marvell.com> | 2008-12-18 11:10:32 +0800 |
|---|---|---|
| committer | Eric Miao <eric.miao@marvell.com> | 2008-12-29 17:57:48 +0800 |
| commit | 6769717d5d51596618f6b143008d8ace11ec8a69 (patch) | |
| tree | 5f4b4b76211132d79e844314725ba4b9e459bc3c /arch/arm/mach-pxa/generic.c | |
| parent | 9f1442bbf9fd68d8e190c91ab294131dd5c289ee (diff) | |
| download | linux-6769717d5d51596618f6b143008d8ace11ec8a69.tar.gz | |
[ARM] rtc-sa1100: don't assume CLOCK_TICK_RATE to be a constant
As Nicolas and Russell pointed out, CLOCK_TICK_RATE is no more a constant on PXA when multiple processors and platforms are selected, change TIMER_FREQ in rtc-sa1100.c into a variable. Since the code to decide the clock tick rate is re-used from timer.c, introduce a common get_clock_tick_rate() for this. Signed-off-by: Eric Miao <eric.miao@marvell.com> Acked-by: Nicolas Pitre <nico@marvell.com>
Diffstat (limited to 'arch/arm/mach-pxa/generic.c')
| -rw-r--r-- | arch/arm/mach-pxa/generic.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 85ed0b33331f..0ccc91c92c44 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -24,6 +24,7 @@ #include <asm/system.h> #include <asm/pgtable.h> #include <asm/mach/map.h> +#include <asm/mach-types.h> #include <mach/pxa-regs.h> #include <mach/reset.h> @@ -39,6 +40,21 @@ void clear_reset_status(unsigned int mask) pxa3xx_clear_reset_status(mask); } +unsigned long get_clock_tick_rate(void) +{ + unsigned long clock_tick_rate; + + if (cpu_is_pxa25x()) + clock_tick_rate = 3686400; + else if (machine_is_mainstone()) + clock_tick_rate = 3249600; + else + clock_tick_rate = 3250000; + + return clock_tick_rate; +} +EXPORT_SYMBOL(get_clock_tick_rate); + /* * Get the clock frequency as reflected by CCCR and the turbo flag. * We assume these values have been applied via a fcs. |