arm64: dts: qcom: sm7225-fairphone-fp4: Add PMK8003 thermals

Configure the thermals for the XO_THERM thermistor connected to the
PMK8003 (which is called PMK8350 in software).

The ADC configuration for PMK8350_ADC7_AMUX_THM1_100K_PU has already
been added in the past.

The trip points can really only be considered as placeholders, more
configuration with cooling etc. can be added later.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Link: https://lore.kernel.org/r/20240705-fp4-thermals-v2-1-a4870a8d084f@fairphone.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: lweiss-fairphone

arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts

@@ -136,6 +136,18 @@
 				};
 			};
 		};
+
+		xo-thermal {
+			thermal-sensors = <&pmk8350_adc_tm 0>;
+
+			trips {
+				active-config0 {
+					temperature = <125000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+			};
+		};
 	};
 };
 
@@ -712,6 +724,17 @@
 	status = "okay";
 };
 
+&pmk8350_adc_tm {
+	status = "okay";
+
+	xo-therm@0 {
+		reg = <0>;
+		io-channels = <&pmk8350_vadc PMK8350_ADC7_AMUX_THM1_100K_PU>;
+		qcom,hw-settle-time-us = <200>;
+		qcom,ratiometric;
+	};
+};
+
 &pmk8350_rtc {
 	status = "okay";
 };