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authorEric Miao <eric.miao@marvell.com>2008-12-18 06:10:32 +0300
committerEric Miao <eric.miao@marvell.com>2008-12-29 12:57:48 +0300
commit6769717d5d51596618f6b143008d8ace11ec8a69 (patch)
tree5f4b4b76211132d79e844314725ba4b9e459bc3c /arch/arm/mach-pxa/generic.c
parent9f1442bbf9fd68d8e190c91ab294131dd5c289ee (diff)
downloadlinux-6769717d5d51596618f6b143008d8ace11ec8a69.tar.xz
[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.c16
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.