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Groups > linux.kernel > #1364005
| From | Krzysztof Kozlowski <k.kozlowski@samsung.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card |
| Date | 2016-03-24 09:20 +0100 |
| Message-ID | <rg8EO-8ea-11@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
The buck9 regulator of S2MPS11 PMIC had incorrect maximum voltage -
lower by 5 mV than specified by datasheet. This buck9 provides power to
other regulators, including LDO13 and LDO19 which supply the MMC2 (SD
card).
When constraints were applied, the depending regulators were not
providing enough power, leading to SD card detection errors:
mmc1: card never left busy state
mmc1: error -110 whilst initialising SD card
Fixes: 86a2d2ac5e5d ("ARM: dts: Add dts file for Odroid XU3 board")
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
The issue can be reproduced on next-20160324 with
bae4fdc88d7f7dda1 (regulator: core: Ensure we are at least in bounds for our constraints).
---
arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
index 1bd507bfa750..82b2ba632cf6 100644
--- a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
@@ -299,7 +299,7 @@
buck9_reg: BUCK9 {
regulator-name = "vdd_2.8v_ldo";
regulator-min-microvolt = <3000000>;
- regulator-max-microvolt = <3750000>;
+ regulator-max-microvolt = <3755000>;
regulator-always-on;
regulator-boot-on;
};
--
2.5.0
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[PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2016-03-24 09:20 +0100
Re: [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card Jaehoon Chung <jh80.chung@samsung.com> - 2016-03-24 10:40 +0100
Re: [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card Mark Brown <broonie@kernel.org> - 2016-03-24 11:00 +0100
Re: [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2016-03-24 11:30 +0100
Re: [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card Mark Brown <broonie@kernel.org> - 2016-03-24 12:10 +0100
Re: [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card Mark Brown <broonie@kernel.org> - 2016-03-24 12:10 +0100
Re: [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card Markus Reichl <m.reichl@fivetechno.de> - 2016-03-24 15:20 +0100
Re: [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card Javier Martinez Canillas <javier@osg.samsung.com> - 2016-03-25 06:50 +0100
Re: [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card Markus Reichl <m.reichl@fivetechno.de> - 2016-03-25 08:20 +0100
Re: [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2016-03-28 02:10 +0200
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