diff mbox series

[U-Boot,v3,7/9] power: regulator: s2mps11: Add enable delay

Message ID 20190216094548.911-8-krzk@kernel.org
State Changes Requested
Delegated to: Minkyu Kang
Headers show
Series arm: exynos: Fix reboot on Odroid HC1 | expand

Commit Message

Krzysztof Kozlowski Feb. 16, 2019, 9:45 a.m. UTC 
According to datasheet, the output on LDO regulators will start
appearing after 10-15 us.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 drivers/power/regulator/s2mps11_regulator.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/power/regulator/s2mps11_regulator.c b/drivers/power/regulator/s2mps11_regulator.c
index 723d27f67c9a..67d1f9689de3 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)