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[92.133.205.191]) by smtp.gmail.com with ESMTPSA id u24sm2092949wml.10.2019.12.31.01.49.22 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 31 Dec 2019 01:49:23 -0800 (PST) From: Loic Poulain To: bjorn.andersson@linaro.org, agross@kernel.org Cc: linux-arm-msm@vger.kernel.org, Loic Poulain Subject: [PATCH] arm64: dts: apq8096-db820c: Fix VDD core voltage Date: Tue, 31 Dec 2019 10:52:37 +0100 Message-Id: <1577785957-31291-1-git-send-email-loic.poulain@linaro.org> X-Mailer: git-send-email 2.7.4 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org 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 --- arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) -- 2.7.4 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 {