From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Kozlowski Date: Wed, 13 Feb 2019 17:46:46 +0100 Subject: [U-Boot] [PATCH v2 7/9] power: regulator: s2mps11: Add enable delay In-Reply-To: <20190213164648.26579-1-krzk@kernel.org> References: <20190213164648.26579-1-krzk@kernel.org> Message-ID: <20190213164648.26579-8-krzk@kernel.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de According to datasheet, the output on LDO regulators will start appearing after 10-15 us. Signed-off-by: Krzysztof Kozlowski --- drivers/power/regulator/s2mps11_regulator.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/power/regulator/s2mps11_regulator.c b/drivers/power/regulator/s2mps11_regulator.c index 723d27f67c9a..1f1581852ee2 100644 --- a/drivers/power/regulator/s2mps11_regulator.c +++ b/drivers/power/regulator/s2mps11_regulator.c @@ -551,7 +551,14 @@ 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); + + /* Wait the "enable delay" for voltage to start to rise */ + udelay(15); + + return ret; } static int ldo_get_mode(struct udevice *dev) -- 2.17.1