clockevents_config_and_register is superior compared to setting
shift/mult and {min,max}_delta_ns by hand.
Signed-off-by: Uwe Kleine-König <u.kleine-koe...@pengutronix.de>
---
Hello,
I wonder where the 50 us limit comes from. This is not a hardware limit,
is it?
Best regards
Uwe
arch/arm/mach-davinci/time.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-davinci/time.c b/arch/arm/mach-davinci/time.c
index 7a55b5c..627bf8b 100644
--- a/arch/arm/mach-davinci/time.c
+++ b/arch/arm/mach-davinci/time.c
@@ -331,7 +331,6 @@ static void davinci_set_mode(enum clock_event_mode mode,
static struct clock_event_device clockevent_davinci = {
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
- .shift = 32,
.set_next_event = davinci_set_next_event,
.set_mode = davinci_set_mode,
};
@@ -397,14 +396,11 @@ void __init davinci_timer_init(void)
/* setup clockevent */
clockevent_davinci.name = id_to_name[timers[TID_CLOCKEVENT].id];
- clockevent_davinci.mult = div_sc(davinci_clock_tick_rate, NSEC_PER_SEC,
- clockevent_davinci.shift);
- clockevent_davinci.max_delta_ns =
- clockevent_delta2ns(0xfffffffe, &clockevent_davinci);
- clockevent_davinci.min_delta_ns = 50000; /* 50 usec */
clockevent_davinci.cpumask = cpumask_of(0);
- clockevents_register_device(&clockevent_davinci);
+ /* min tick corresponds to 50 usec assuming a 24 MHz clock */
+ clockevents_config_and_register(&clockevent_davinci,
+ davinci_clock_tick_rate, 1200, 0xfffffffe);
for (i=0; i< ARRAY_SIZE(timers); i++)
timer32_config(&timers[i]);
--
1.8.4.rc3
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