[PATCH] rtc: brcmstb-waketimer: Set wktmr prescaler

[Justin Chen]

The HW default is one tick per second, however instead of assuming this,
lets make sure the waketimer is actually one tick per second before
arming the alarm.

Signed-off-by: Justin Chen <justinpopo6 at gmail.com>
---
 drivers/rtc/rtc-brcmstb-waketimer.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/rtc/rtc-brcmstb-waketimer.c b/drivers/rtc/rtc-brcmstb-waketimer.c
index 796ac79..46116b7 100644
--- a/drivers/rtc/rtc-brcmstb-waketimer.c
+++ b/drivers/rtc/rtc-brcmstb-waketimer.c
@@ -60,6 +60,10 @@ static void brcmstb_waketmr_set_alarm(struct brcmstb_waketmr *timer,
 {
 	brcmstb_waketmr_clear_alarm(timer);
 
+	/* Make sure we are actually counting in seconds */
+	writel_relaxed(BRCMSTB_WKTMR_DEFAULT_FREQ,
+			timer->base + BRCMSTB_WKTMR_PRESCALER);
+
 	writel_relaxed(secs + 1, timer->base + BRCMSTB_WKTMR_ALARM);
 }
 
-- 
2.7.4