From: Krzysztof Kozlowski <krzk@kernel.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v4 7/9] power: regulator: s2mps11: Add enable delay
Date: Tue, 5 Mar 2019 20:58:00 +0100 [thread overview]
Message-ID: <20190305195802.14397-8-krzk@kernel.org> (raw)
In-Reply-To: <20190305195802.14397-1-krzk@kernel.org>
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>
---
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 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)
--
2.17.1
next prev parent reply other threads:[~2019-03-05 19:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190305200133epcas1p2a0d09fc327298646ae949a1bda4806bd@epcas1p2.samsung.com>
2019-03-05 19:57 ` [U-Boot] [PATCH v4 0/9] arm: exynos: Fix reboot on Odroid HC1 Krzysztof Kozlowski
2019-03-05 19:57 ` [U-Boot] [PATCH v4 1/9] adc: exynos-adc: Fix wrong bit operation used to stop the ADC Krzysztof Kozlowski
2019-03-05 19:57 ` [U-Boot] [PATCH v4 2/9] power: regulator: s2mps11: Fix step for LDO27 and LDO35 Krzysztof Kozlowski
2019-03-05 19:57 ` [U-Boot] [PATCH v4 3/9] arm: exynos: Detect revision later, when all resources are ready Krzysztof Kozlowski
2019-03-05 19:57 ` [U-Boot] [PATCH v4 4/9] arm: exynos: odroid-xu3: Display info late to have proper type Krzysztof Kozlowski
2019-03-05 19:57 ` [U-Boot] [PATCH v4 5/9] arm: exynos: Wait till ADC stabilizes before checking Odroid HC1 revision Krzysztof Kozlowski
2019-03-05 19:57 ` [U-Boot] [PATCH v4 6/9] regulator: Add support for ramp delay Krzysztof Kozlowski
2019-03-05 19:58 ` Krzysztof Kozlowski [this message]
2019-03-05 19:58 ` [U-Boot] [PATCH v4 8/9] arm: dts: exynos: Add supply for ADC block to Odroid XU3 family Krzysztof Kozlowski
2019-03-05 19:58 ` [U-Boot] [PATCH v4 9/9] arm: dts: exynos: Add ramp delay property to LDO regulators " Krzysztof Kozlowski
2019-03-06 7:03 ` [U-Boot] [PATCH v4 0/9] arm: exynos: Fix reboot on Odroid HC1 Minkyu Kang
2019-03-06 7:29 ` Krzysztof Kozlowski
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