From 000ee4b7395236a50c7cb261d74efec6207cfa80 Mon Sep 17 00:00:00 2001
From: Krzysztof Kozlowski <krzk@kernel.org>
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 <krzk@kernel.org>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
---
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)
--
2.39.5