On Fri 10 Jun 11:19 PDT 2016, Srinivas Kandagatla wrote: > From: Parth Pancholi <parth.pancholi@xxxxxxxxxxxxxx> > > 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@xxxxxxxxxx> > [Srinivas Kandagatla: rewrote the change log] > Tested-by: Girish Sharma <girish.sharma@xxxxxxxxxxxxxx> > Signed-off-by: Parth Pancholi <parth.pancholi@xxxxxxxxxxxxxx> If I read the msm-3.4 tree correctly most (perhaps all) 8064 devices should have this setup. Acked-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> Regards, Bjorn > --- > 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 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html