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
>
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