diff options
| author | Loic Poulain <loic.poulain@linaro.org> | 2020-01-07 13:55:55 +0100 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-01-07 15:27:57 -0800 |
| commit | 7a2a2231ef22cb158ea05e60ba6a6d329327a963 (patch) | |
| tree | 668bca7e5c251298324a37f38567759f3a1860dd | |
| parent | eac8ce86cb90ba96cb4bcbf2549d7a8b6938aa30 (diff) | |
arm64: dts: apq8096-db820c: Fix VDD core voltage
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-bench). 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>
Link: https://lore.kernel.org/r/1578401755-26211-1-git-send-email-loic.poulain@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
| -rw-r--r-- | arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi | 16 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/qcom/msm8996.dtsi | 5 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/qcom/pm8994.dtsi | 4 |
3 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi index 3f2927a2007a..fff6115f2670 100644 --- a/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi +++ b/arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi @@ -647,6 +647,22 @@ "NC"; }; +&pm8994_spmi_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>; + }; +}; + &pmi8994_gpios { gpio-line-names = "NC", diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi index 6590904294ed..7ae082ea14ea 100644 --- a/arch/arm64/boot/dts/qcom/msm8996.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi @@ -2137,6 +2137,11 @@ }; }; + saw3: syscon@9a10000 { + compatible = "syscon"; + reg = <0x09a10000 0x1000>; + }; + intc: interrupt-controller@9bc0000 { compatible = "qcom,msm8996-gic-v3", "arm,gic-v3"; #interrupt-cells = <3>; diff --git a/arch/arm64/boot/dts/qcom/pm8994.dtsi b/arch/arm64/boot/dts/qcom/pm8994.dtsi index 76b5a3e6a2b5..7e4f777746cb 100644 --- a/arch/arm64/boot/dts/qcom/pm8994.dtsi +++ b/arch/arm64/boot/dts/qcom/pm8994.dtsi @@ -85,5 +85,9 @@ reg = <0x1 SPMI_USID>; #address-cells = <1>; #size-cells = <0>; + + pm8994_spmi_regulators: regulators { + compatible = "qcom,pm8994-regulators"; + }; }; }; |