From mboxrd@z Thu Jan 1 00:00:00 1970 From: henryc.chen@mediatek.com (Henry Chen) Date: Wed, 30 Dec 2015 20:36:01 +0800 Subject: [PATCH] soc: mediatek: PMIC wrap: Enable STAUPD_PRD before WDT_SRC_EN enabled. Message-ID: <1451478961-5668-1-git-send-email-henryc.chen@mediatek.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The STAUPD_TRIG will be enable when WDT_INT enable on probe function, if doesn't enable STAUPD_PRD together, interrupt will be triggered because STAUPD timeout. To avoid unexpected interrupt, enable periodic status update which will be updated to PMIC every selected time period. Signed-off-by: Henry Chen --- drivers/soc/mediatek/mtk-pmic-wrap.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c index a8cde17..6e5c20f 100644 --- a/drivers/soc/mediatek/mtk-pmic-wrap.c +++ b/drivers/soc/mediatek/mtk-pmic-wrap.c @@ -904,6 +904,11 @@ static int pwrap_probe(struct platform_device *pdev) return -ENODEV; } + /* + * Enable periodic status update which will be updated to PMIC + * every selected time period. + */ + pwrap_writel(wrp, 0x5, PWRAP_STAUPD_PRD); /* Initialize watchdog, may not be done by the bootloader */ pwrap_writel(wrp, 0xf, PWRAP_WDT_UNIT); pwrap_writel(wrp, 0xffffffff, PWRAP_WDT_SRC_EN); -- 1.9.1