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 <[email protected]> --- 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
