[PATCH] soc: mediatek: PMIC wrap: Enable STAUPD_PRD before WDT_SRC_EN enabled.

Henry Chen
2015-12-30T12:36:17Z

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 <henryc.chen@mediatek.com>
---
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