arm64: dts: mt8183-kukui: Add tboard thermal zones

Add tboard thermal zones.
The tboard thermal sensors are a kind of NTC sensors which are located
on PCB board to correlate the temperature of the case (Tskin).

pull-up voltage: 1800 mv
pull-up resistor: 75K

Vsense = pull-up voltage * Rntc / ( pull-up resistor + Rntc )
AuxIn = Vsense * 4096 / 1500
Signed-off-by: Michael Kao <michael.kao@mediatek.com>
Signed-off-by: Ben Tseng <ben.tseng@mediatek.com>
Tested-by: Hsin-Yi Wang <hsinyi@chromium.org>

Link: https://lore.kernel.org/r/20210604093755.13288-1-ben.tseng@mediatek.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi

@@ -851,6 +851,20 @@ &ssusb {
 	status = "okay";
 };
 
+&thermal_zones {
+	tboard1 {
+		polling-delay = <1000>; /* milliseconds */
+		polling-delay-passive = <0>; /* milliseconds */
+		thermal-sensors = <&tboard_thermistor1>;
+	};
+
+	tboard2 {
+		polling-delay = <1000>; /* milliseconds */
+		polling-delay-passive = <0>; /* milliseconds */
+		thermal-sensors = <&tboard_thermistor2>;
+	};
+};
+
 &u3phy {
 	status = "okay";
 };

arch/arm64/boot/dts/mediatek/mt8183.dtsi

@@ -673,7 +673,7 @@ thermal: thermal@1100b000 {
 			nvmem-cell-names = "calibration-data";
 		};
 
-		thermal-zones {
+		thermal_zones: thermal-zones {
 			cpu_thermal: cpu_thermal {
 				polling-delay-passive = <100>;
 				polling-delay = <500>;