From 000ee4b7395236a50c7cb261d74efec6207cfa80 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 6 Mar 2019 19:37:55 +0100 Subject: [PATCH] power: regulator: s2mps11: Add enable delay According to datasheet, the output on LDO regulators will start appearing after 10-15 us. Signed-off-by: Krzysztof Kozlowski Tested-by: Anand Moon Signed-off-by: Minkyu Kang --- drivers/power/regulator/s2mps11_regulator.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/power/regulator/s2mps11_regulator.c b/drivers/power/regulator/s2mps11_regulator.c index 723d27f67c..67d1f9689d 100644 --- a/drivers/power/regulator/s2mps11_regulator.c +++ b/drivers/power/regulator/s2mps11_regulator.c @@ -551,7 +551,16 @@ static int ldo_get_enable(struct udevice *dev) static int ldo_set_enable(struct udevice *dev, bool enable) { - return s2mps11_ldo_enable(dev, PMIC_OP_SET, &enable); + int ret; + + ret = s2mps11_ldo_enable(dev, PMIC_OP_SET, &enable); + if (ret) + return ret; + + /* Wait the "enable delay" for voltage to start to rise */ + udelay(15); + + return 0; } static int ldo_get_mode(struct udevice *dev) -- 2.25.1