Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1364031
| From | Jaehoon Chung <jh80.chung@samsung.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] ARM: dts: exynos: Fix invalid maximum voltage for buck9 supplying SD card |
| Date | 2016-03-24 10:40 +0100 |
| Message-ID | <rg9Ue-xV-29@gated-at.bofh.it> (permalink) |
| References | <rg8EO-8ea-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 03/24/2016 05:12 PM, Krzysztof Kozlowski wrote:
> 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>
Tested-by: Jaehoon Chung <jh80.chung@samsung.com>
Best Regards,
Jaehoon Chung
>
> ---
>
> 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;
> };
>
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[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
csiph-web