[PATCH v2 2/2] ARM: dts: sd_600eval: Fix eMMC lockup issue
From: Bjorn Andersson <hidden>
Date: 2016-06-12 04:47:42
Also in:
linux-arm-msm, linux-devicetree, lkml
On Fri 10 Jun 11:19 PDT 2016, Srinivas Kandagatla wrote:
From: Parth Pancholi <redacted> 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 <redacted> [Srinivas Kandagatla: rewrote the change log] Tested-by: Girish Sharma <redacted> Signed-off-by: Parth Pancholi <redacted>
If I read the msm-3.4 tree correctly most (perhaps all) 8064 devices should have this setup. Acked-by: Bjorn Andersson <redacted> Regards, Bjorn
quoted hunk ↗ jump to hunk
--- 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 <dt-bindings/gpio/gpio.h> +#include <dt-bindings/mfd/qcom-rpm.h> / { 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 = <QCOM_RPM_FORCE_MODE_AUTO>; bias-pull-down; regulator-always-on; };-- 2.8.3