linux-kernel - [PATCH v4 2/2] ARM: dts: qcom: msm8960: Add thermal sensor (tsens)

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Message-Id: <20250227-expressatt-tsens-v4-2-d70afa5a1fd0@gmail.com>
Date: Thu, 27 Feb 2025 17:16:55 -0800
From: Rudraksha Gupta <guptarud@...il.com>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, wctrl@...ton.me, 
 Rudraksha Gupta <guptarud@...il.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: [PATCH v4 2/2] ARM: dts: qcom: msm8960: Add thermal sensor (tsens)

Add support for the thermal sensor (tsens) on the MSM8960 by copying and
modifying the relevant nodes from the APQ8064 dtsi. These changes enable
thermal management.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Rudraksha Gupta <guptarud@...il.com>
---
 arch/arm/boot/dts/qcom/qcom-msm8960.dtsi | 71 +++++++++++++++++++++++++++++++-
 1 file changed, 70 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/qcom/qcom-msm8960.dtsi b/arch/arm/boot/dts/qcom/qcom-msm8960.dtsi
index 865fe7cc39511d7cb9ec5c4b12100404f77e2989..be4a60119e1d85e02080a7aaf18b1e9f1176e56e 100644
--- a/arch/arm/boot/dts/qcom/qcom-msm8960.dtsi
+++ b/arch/arm/boot/dts/qcom/qcom-msm8960.dtsi
@@ -52,6 +52,48 @@ memory@...00000 {
 		reg = <0x80000000 0>;
 	};
 
+	thermal-zones {
+		cpu0-thermal {
+			polling-delay-passive = <250>;
+			polling-delay = <1000>;
+			thermal-sensors = <&tsens 0>;
+
+			trips {
+				cpu_alert0: trip0 {
+					temperature = <60000>;
+					hysteresis = <10000>;
+					type = "passive";
+				};
+
+				cpu_crit0: trip1 {
+					temperature = <95000>;
+					hysteresis = <10000>;
+					type = "critical";
+				};
+			};
+		};
+
+		cpu1-thermal {
+			polling-delay-passive = <250>;
+			polling-delay = <1000>;
+			thermal-sensors = <&tsens 1>;
+
+			trips {
+				cpu_alert1: trip0 {
+					temperature = <60000>;
+					hysteresis = <10000>;
+					type = "passive";
+				};
+
+				cpu_crit1: trip1 {
+					temperature = <95000>;
+					hysteresis = <10000>;
+					type = "critical";
+				};
+			};
+		};
+	};
+
 	cpu-pmu {
 		compatible = "qcom,krait-pmu";
 		interrupts = <GIC_PPI 10 0x304>;
@@ -115,6 +157,21 @@ timer@...a000 {
 			cpu-offset = <0x80000>;
 		};
 
+		qfprom: efuse@...000 {
+			compatible = "qcom,msm8960-qfprom", "qcom,qfprom";
+			reg = <0x00700000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			tsens_calib: calib@404 {
+				reg = <0x404 0x10>;
+			};
+
+			tsens_backup: backup-calib@414 {
+				reg = <0x414 0x10>;
+			};
+		};
+
 		msmgpio: pinctrl@...000 {
 			compatible = "qcom,msm8960-pinctrl";
 			gpio-controller;
@@ -127,7 +184,7 @@ msmgpio: pinctrl@...000 {
 		};
 
 		gcc: clock-controller@...000 {
-			compatible = "qcom,gcc-msm8960";
+			compatible = "qcom,gcc-msm8960", "syscon";
 			#clock-cells = <1>;
 			#reset-cells = <1>;
 			reg = <0x900000 0x4000>;
@@ -135,6 +192,18 @@ gcc: clock-controller@...000 {
 				 <&pxo_board>,
 				 <&lcc PLL4>;
 			clock-names = "cxo", "pxo", "pll4";
+
+			tsens: thermal-sensor {
+				compatible = "qcom,msm8960-tsens";
+
+				nvmem-cells = <&tsens_calib>, <&tsens_backup>;
+				nvmem-cell-names = "calib", "calib_backup";
+				interrupts = <GIC_SPI 178 IRQ_TYPE_LEVEL_HIGH>;
+				interrupt-names = "uplow";
+
+				#qcom,sensors = <5>;
+				#thermal-sensor-cells = <1>;
+			};
 		};
 
 		lcc: clock-controller@...00000 {

-- 
2.45.2