linux-kernel - [PATCH v2] arm64: dts: qcom: pm6150: Add thermal zone for PMIC on-die temperature

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Message-Id: <20210603081215.v2.1.Id4510e9e4baaa3f6c9fdd5cdf4d8606e63c262e3@changeid>
Date:   Thu,  3 Jun 2021 08:12:34 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Douglas Anderson <dianders@...omium.org>,
        devicetree@...r.kernel.org, Stephen Boyd <swboyd@...omium.org>,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Matthias Kaehlcke <mka@...omium.org>
Subject: [PATCH v2] arm64: dts: qcom: pm6150: Add thermal zone for PMIC on-die temperature

Add a thermal zone for the pm6150 on-die temperature. The system should
try to shut down orderly when the temperature reaches the critical trip
point at 115°C, otherwise the PMIC will perform a HW power off at 145°C.

Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
---

Changes in v2:
- remove 'pm6150-' prefix from critical trip point
- updated commit message

 arch/arm64/boot/dts/qcom/pm6150.dtsi | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/pm6150.dtsi b/arch/arm64/boot/dts/qcom/pm6150.dtsi
index 8ab4f1f78bbf..8a4972e6a24c 100644
--- a/arch/arm64/boot/dts/qcom/pm6150.dtsi
+++ b/arch/arm64/boot/dts/qcom/pm6150.dtsi
@@ -7,6 +7,30 @@
 #include <dt-bindings/spmi/spmi.h>
 #include <dt-bindings/thermal/thermal.h>
 
+/ {
+	thermal-zones {
+		pm6150_thermal: pm6150-thermal {
+			polling-delay-passive = <100>;
+			polling-delay = <0>;
+			thermal-sensors = <&pm6150_temp>;
+
+			trips {
+				pm6150_trip0: trip0 {
+					temperature = <95000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
+				pm6150_crit: crit {
+					temperature = <115000>;
+					hysteresis = <0>;
+					type = "critical";
+				};
+			};
+		};
+	};
+};
+
 &spmi_bus {
 	pm6150_lsid0: pmic@0 {
 		compatible = "qcom,pm6150", "qcom,spmi-pmic";
-- 
2.32.0.rc0.204.g9fa02ecfa5-goog