From mboxrd@z Thu Jan 1 00:00:00 1970 From: justin.chen@broadcom.com (Justin Chen) Date: Mon, 26 Feb 2018 12:09:58 -0800 Subject: [PATCH v2] rtc: brcmstb-waketimer: Set wktmr prescaler Message-ID: <1519675798-26720-1-git-send-email-justin.chen@broadcom.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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. Reviewed-by: Florian Fainelli Signed-off-by: Justin Chen --- drivers/rtc/rtc-brcmstb-waketimer.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/rtc/rtc-brcmstb-waketimer.c b/drivers/rtc/rtc-brcmstb-waketimer.c index 796ac79..231b2f7 100644 --- a/drivers/rtc/rtc-brcmstb-waketimer.c +++ b/drivers/rtc/rtc-brcmstb-waketimer.c @@ -60,6 +60,9 @@ 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(timer->rate, timer->base + BRCMSTB_WKTMR_PRESCALER); + writel_relaxed(secs + 1, timer->base + BRCMSTB_WKTMR_ALARM); } -- 2.7.4