linux-kernel - [PATCH v2 1/2] arm64: dts: qcom: pm6350: add temp sensor and thermal zone config

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Message-Id: <20221028075405.124809-1-luca.weiss@fairphone.com>
Date:   Fri, 28 Oct 2022 09:54:04 +0200
From:   Luca Weiss <luca.weiss@...rphone.com>
To:     linux-arm-msm@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Luca Weiss <luca.weiss@...rphone.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] arm64: dts: qcom: pm6350: add temp sensor and thermal zone config

Add temp-alarm device tree node and a default configuration for the
corresponding thermal zone for this PMIC. Temperatures are based on
downstream values, except for trip2 where 125°C is used instead of 145°C
due to limitations without a configured ADC.

Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
Changes in v2:
* Decrease trip2 temp to 125degC from 145degC after discussion with
  Matthias

 arch/arm64/boot/dts/qcom/pm6350.dtsi | 38 ++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/pm6350.dtsi b/arch/arm64/boot/dts/qcom/pm6350.dtsi
index ecf9b9919182..c9575cf0f518 100644
--- a/arch/arm64/boot/dts/qcom/pm6350.dtsi
+++ b/arch/arm64/boot/dts/qcom/pm6350.dtsi
@@ -5,6 +5,37 @@
 
 #include <dt-bindings/spmi/spmi.h>
 
+/ {
+	thermal-zones {
+		pm6350-thermal {
+			polling-delay-passive = <100>;
+			polling-delay = <0>;
+
+			thermal-sensors = <&pm6350_temp>;
+
+			trips {
+				trip0 {
+					temperature = <95000>;
+					hysteresis = <0>;
+					type = "passive";
+				};
+
+				trip1 {
+					temperature = <115000>;
+					hysteresis = <0>;
+					type = "hot";
+				};
+
+				trip2 {
+					temperature = <125000>;
+					hysteresis = <0>;
+					type = "critical";
+				};
+			};
+		};
+	};
+};
+
 &spmi_bus {
 	pmic@0 {
 		compatible = "qcom,pm6350", "qcom,spmi-pmic";
@@ -35,6 +66,13 @@ pm6350_resin: resin {
 			};
 		};
 
+		pm6350_temp: temp-alarm@...0 {
+			compatible = "qcom,spmi-temp-alarm";
+			reg = <0x2400>;
+			interrupts = <0x0 0x24 0x0 IRQ_TYPE_EDGE_BOTH>;
+			#thermal-sensor-cells = <0>;
+		};
+
 		pm6350_gpios: gpios@...0 {
 			compatible = "qcom,pm6350-gpio", "qcom,spmi-gpio";
 			reg = <0xc000>;
-- 
2.38.1