From mboxrd@z Thu Jan 1 00:00:00 1970 From: srinivas.kandagatla@linaro.org (Srinivas Kandagatla) Date: Fri, 10 Jun 2016 19:19:55 +0100 Subject: [PATCH v2 2/2] ARM: dts: sd_600eval: Fix eMMC lockup issue In-Reply-To: <1465582795-30266-1-git-send-email-srinivas.kandagatla@linaro.org> References: <1465582795-30266-1-git-send-email-srinivas.kandagatla@linaro.org> Message-ID: <1465582795-30266-2-git-send-email-srinivas.kandagatla@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Parth Pancholi This board locks up if we stress test the eMMC, as the regulator s4 is unable to supply enough current for all the peripherials attached to it. As this supply is wired up to most of the peripherials including DDR, it resulted in such lockup. This patch fixes this issue by setting s4 regulator correctly with Auto power mode. Reported-by: Srinivas Kandagatla [Srinivas Kandagatla: rewrote the change log] Tested-by: Girish Sharma Signed-off-by: Parth Pancholi --- arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dts | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dts b/arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dts index 7df0108..39ae2bc 100644 --- a/arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dts +++ b/arch/arm/boot/dts/qcom-apq8064-arrow-sd-600eval.dts @@ -1,6 +1,7 @@ #include "qcom-apq8064-v2.0.dtsi" #include "qcom-apq8064-arrow-sd-600eval-pins.dtsi" #include +#include / { model = "Arrow Electronics, APQ8064 SD_600eval"; @@ -82,7 +83,8 @@ s4 { regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; - qcom,switch-mode-frequency = <3200000>; + qcom,switch-mode-frequency = <1600000>; + qcom,force-mode = ; bias-pull-down; regulator-always-on; }; -- 2.8.3