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Diffstat (limited to 'arch/arm/mach-sa1100/time.c')
-rw-r--r--arch/arm/mach-sa1100/time.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm/mach-sa1100/time.c b/arch/arm/mach-sa1100/time.c
index 4852c08cb526..1dea6cfafb31 100644
--- a/arch/arm/mach-sa1100/time.c
+++ b/arch/arm/mach-sa1100/time.c
@@ -9,6 +9,7 @@
*
*/
#include <linux/init.h>
+#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
@@ -20,6 +21,9 @@
#include <mach/hardware.h>
#include <mach/irqs.h>
+#define SA1100_CLOCK_FREQ 3686400
+#define SA1100_LATCH DIV_ROUND_CLOSEST(SA1100_CLOCK_FREQ, HZ)
+
static u64 notrace sa1100_read_sched_clock(void)
{
return readl_relaxed(OSCR);
@@ -93,7 +97,7 @@ static void sa1100_timer_resume(struct clock_event_device *cedev)
/*
* OSMR0 is the system timer: make sure OSCR is sufficiently behind
*/
- writel_relaxed(OSMR0 - LATCH, OSCR);
+ writel_relaxed(OSMR0 - SA1100_LATCH, OSCR);
}
#else
#define sa1100_timer_suspend NULL
@@ -128,7 +132,7 @@ void __init sa1100_timer_init(void)
setup_irq(IRQ_OST0, &sa1100_timer_irq);
- clocksource_mmio_init(OSCR, "oscr", CLOCK_TICK_RATE, 200, 32,
+ clocksource_mmio_init(OSCR, "oscr", SA1100_CLOCK_FREQ, 200, 32,
clocksource_mmio_readl_up);
clockevents_config_and_register(&ckevt_sa1100_osmr0, 3686400,
MIN_OSCR_DELTA * 2, 0x7fffffff);