diff options
| 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/include/mach | |
| parent | 9f1442bbf9fd68d8e190c91ab294131dd5c289ee (diff) | |
[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/include/mach')
| -rw-r--r-- | arch/arm/mach-pxa/include/mach/hardware.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/include/mach/timex.h | 8 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/include/mach/hardware.h b/arch/arm/mach-pxa/include/mach/hardware.h index e2d6784aa7ef..c666796911cb 100644 --- a/arch/arm/mach-pxa/include/mach/hardware.h +++ b/arch/arm/mach-pxa/include/mach/hardware.h @@ -291,6 +291,8 @@ */ extern unsigned int get_memclk_frequency_10khz(void); +/* return the clock tick rate of the OS timer */ +extern unsigned long get_clock_tick_rate(void); #endif #if defined(CONFIG_MACH_ARMCORE) && defined(CONFIG_PCI) diff --git a/arch/arm/mach-pxa/include/mach/timex.h b/arch/arm/mach-pxa/include/mach/timex.h index b05fc6683c47..af6760a50e1a 100644 --- a/arch/arm/mach-pxa/include/mach/timex.h +++ b/arch/arm/mach-pxa/include/mach/timex.h @@ -10,6 +10,14 @@ * published by the Free Software Foundation. */ +/* Various drivers are still using the constant of CLOCK_TICK_RATE, for + * those drivers to at least work, the definition is provided here. + * + * NOTE: this is no longer accurate when multiple processors and boards + * are selected, newer drivers should not depend on this any more. Use + * either the clocksource/clockevent or get this at run-time by calling + * get_clock_tick_rate() (as defined in generic.c). + */ #if defined(CONFIG_PXA25x) /* PXA250/210 timer base */ |