[PATCH 6.6 016/186] arm64: dts: mediatek: cherry: Add platform thermal configuration

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6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>

[ Upstream commit 729f30eac8bce6783f889cf8390ea869d03407e6 ]

This platform has three auxiliary NTC thermistors, connected to the
SoC's ADC pins. Enable the auxadc in order to be able to read the
ADC values, add a generic-adc-thermal LUT for each and finally assign
them to the SoC's thermal zones.

Tested-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Reviewed-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230424112523.1436926-2-angelogioacchino.delregno@xxxxxxxxxxxxx
Stable-dep-of: 17b33dd9e4a3 ("arm64: dts: mediatek: cherry: Describe CPU supplies")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 .../boot/dts/mediatek/mt8195-cherry.dtsi      | 105 ++++++++++++++++++
 1 file changed, 105 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
index 3f508e5c18434..d721ddb230747 100644
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -114,6 +114,77 @@
 		regulator-boot-on;
 	};
 
+	/* Murata NCP03WF104F05RL */
+	tboard_thermistor1: thermal-sensor-t1 {
+		compatible = "generic-adc-thermal";
+		#thermal-sensor-cells = <0>;
+		io-channels = <&auxadc 0>;
+		io-channel-names = "sensor-channel";
+		temperature-lookup-table = <	(-10000) 1553
+						(-5000) 1485
+						0 1406
+						5000 1317
+						10000 1219
+						15000 1115
+						20000 1007
+						25000 900
+						30000 796
+						35000 697
+						40000 605
+						45000 523
+						50000 449
+						55000 384
+						60000 327
+						65000 279
+						70000 237
+						75000 202
+						80000 172
+						85000 147
+						90000 125
+						95000 107
+						100000 92
+						105000 79
+						110000 68
+						115000 59
+						120000 51
+						125000 44>;
+	};
+
+	tboard_thermistor2: thermal-sensor-t2 {
+		compatible = "generic-adc-thermal";
+		#thermal-sensor-cells = <0>;
+		io-channels = <&auxadc 1>;
+		io-channel-names = "sensor-channel";
+		temperature-lookup-table = <	(-10000) 1553
+						(-5000) 1485
+						0 1406
+						5000 1317
+						10000 1219
+						15000 1115
+						20000 1007
+						25000 900
+						30000 796
+						35000 697
+						40000 605
+						45000 523
+						50000 449
+						55000 384
+						60000 327
+						65000 279
+						70000 237
+						75000 202
+						80000 172
+						85000 147
+						90000 125
+						95000 107
+						100000 92
+						105000 79
+						110000 68
+						115000 59
+						120000 51
+						125000 44>;
+	};
+
 	usb_vbus: regulator-5v0-usb-vbus {
 		compatible = "regulator-fixed";
 		regulator-name = "usb-vbus";
@@ -176,6 +247,10 @@
 	memory-region = <&afe_mem>;
 };
 
+&auxadc {
+	status = "okay";
+};
+
 &dp_intf0 {
 	status = "okay";
 
@@ -1127,6 +1202,36 @@
 	};
 };
 
+&thermal_zones {
+	soc-area-thermal {
+		polling-delay = <1000>;
+		polling-delay-passive = <250>;
+		thermal-sensors = <&tboard_thermistor1>;
+
+		trips {
+			trip-crit {
+				temperature = <84000>;
+				hysteresis = <1000>;
+				type = "critical";
+			};
+		};
+	};
+
+	pmic-area-thermal {
+		polling-delay = <1000>;
+		polling-delay-passive = <0>;
+		thermal-sensors = <&tboard_thermistor2>;
+
+		trips {
+			trip-crit {
+				temperature = <84000>;
+				hysteresis = <1000>;
+				type = "critical";
+			};
+		};
+	};
+};
+
 &u3phy0 {
 	status = "okay";
 };
-- 
2.43.0







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