From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from rnd-relay.smtp.broadcom.com ([192.19.229.170]:55489 "EHLO rnd-relay.smtp.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751413AbeBVBQ2 (ORCPT ); Wed, 21 Feb 2018 20:16:28 -0500 From: Justin Chen To: linux-rtc@vger.kernel.org Cc: a.zummo@towertech.it, alexandre.belloni@free-electrons.com, computersforpeace@gmail.com, gregory.0xf0@gmail.com, f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Justin Chen , Justin Chen Subject: [PATCH] rtc: brcmstb-waketimer: Set wktmr prescaler Date: Wed, 21 Feb 2018 17:15:55 -0800 Message-Id: <1519262155-15580-1-git-send-email-justin.chen@broadcom.com> Sender: linux-rtc-owner@vger.kernel.org List-ID: 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 --- 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