| Message ID | 1577785957-31291-1-git-send-email-loic.poulain@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | arm64: dts: apq8096-db820c: Fix VDD core voltage | expand |
diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi index dba3488..8cde693 100644 --- a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi +++ b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi @@ -493,6 +493,11 @@ core-vcc-supply = <&pm8994_s4>; }; }; + + saw3: syscon@9A10000 { + compatible = "syscon"; + reg = <0x9A10000 0x1000>; + }; }; @@ -681,6 +686,25 @@ }; }; }; + + pmic@1 { + spm-regulators { + compatible = "qcom,pm8994-regulators"; + qcom,saw-reg = <&saw3>; + s9 { + qcom,saw-slave; + }; + s10 { + qcom,saw-slave; + }; + s11 { + qcom,saw-leader; + regulator-always-on; + regulator-min-microvolt = <1230000>; + regulator-max-microvolt = <1230000>; + }; + }; + }; }; &sound {
APQ8096 has its VDD APC (Power for quad Kryo applications microprocessors) powered by PM8996 PMIC S9, S10, S11 tri-phase regulators (gang). The bootloader may have configured these regulators with non sustainable default values, leading to sporadic hangs under CPU stress tests (cpufreq-becnh). Ideally we should enable voltage scaling along with frequency scaling, but for now just set the regulator gang value to a sane voltage, capable of supporting highest frequencies (turbo). Signed-off-by: Loic Poulain <loic.poulain@linaro.org> --- arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) -- 2.7.4