linux-kernel - [PATCH 1/3] ARM: dts: qcom: pm8226: Add thermal sensor and thermal zone config

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Date:   Tue, 30 May 2023 01:14:59 +0300
From:   Matti Lehtimäki <matti.lehtimaki@...il.com>
To:     linux-arm-msm@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Matti Lehtimäki <matti.lehtimaki@...il.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] ARM: dts: qcom: pm8226: Add thermal sensor and thermal zone config

Add thermal sensor, which is using on chip VADC channel to report PMIC
die temperature. Also add the corresponding thermal zone.

Signed-off-by: Matti Lehtimäki <matti.lehtimaki@...il.com>
---
 arch/arm/boot/dts/qcom-pm8226.dtsi | 39 ++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-pm8226.dtsi b/arch/arm/boot/dts/qcom-pm8226.dtsi
index 46ba84f86c9f..3b8ad28cecb0 100644
--- a/arch/arm/boot/dts/qcom-pm8226.dtsi
+++ b/arch/arm/boot/dts/qcom-pm8226.dtsi
@@ -4,6 +4,36 @@
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/spmi/spmi.h>
 
+/ {
+	thermal-zones {
+		pm8226-thermal {
+			polling-delay-passive = <100>;
+			polling-delay = <0>;
+			thermal-sensors = <&pm8226_temp>;
+
+			trips {
+				trip0 {
+					temperature = <105000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				trip1 {
+					temperature = <125000>;
+					hysteresis = <2000>;
+					type = "hot";
+				};
+
+				crit {
+					temperature = <145000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+		};
+	};
+};
+
 &spmi_bus {
 	pm8226_0: pm8226@0 {
 		compatible = "qcom,pm8226", "qcom,spmi-pmic";
@@ -55,6 +85,15 @@ smbb: charger@...0 {
 			chg_otg: otg-vbus { };
 		};
 
+		pm8226_temp: temp-alarm@...0 {
+			compatible = "qcom,spmi-temp-alarm";
+			reg = <0x2400>;
+			interrupts = <0 0x24 0 IRQ_TYPE_EDGE_RISING>;
+			io-channels = <&pm8226_vadc VADC_DIE_TEMP>;
+			io-channel-names = "thermal";
+			#thermal-sensor-cells = <0>;
+		};
+
 		pm8226_vadc: adc@...0 {
 			compatible = "qcom,spmi-vadc";
 			reg = <0x3100>;
-- 
2.34.1