linux-kernel - [PATCH 1/2] arm64: dts: qcom: sm7225-fairphone-fp4: Add PMK8003 thermals

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Message-Id: <20240105-fp4-thermals-v1-1-f95875a536b7@fairphone.com>
Date: Fri, 05 Jan 2024 15:54:27 +0100
From: Luca Weiss <luca.weiss@...rphone.com>
To: 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>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Luca Weiss <luca.weiss@...rphone.com>
Subject: [PATCH 1/2] 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.

Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
 arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts | 25 +++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
index ade619805519..b7ccfe4011bb 100644
--- a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
+++ b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
@@ -112,6 +112,20 @@ active-config0 {
 				};
 			};
 		};
+
+		xo-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+			thermal-sensors = <&pmk8350_adc_tm 0>;
+
+			trips {
+				active-config0 {
+					temperature = <125000>;
+					hysteresis = <1000>;
+					type = "passive";
+				};
+			};
+		};
 	};
 };
 
@@ -490,6 +504,17 @@ conn-therm@1 {
 	};
 };
 
+&pmk8350_adc_tm {
+	status = "okay";
+
+	xo-therm@0 {
+		reg = <0>;
+		io-channels = <&pmk8350_vadc PMK8350_ADC7_AMUX_THM1_100K_PU>;
+		qcom,ratiometric;
+		qcom,hw-settle-time-us = <200>;
+	};
+};
+
 &pmk8350_rtc {
 	status = "okay";
 };

-- 
2.43.0