linux-kernel - [PATCH v1 2/5] arm64: dts: imx8-apalis: add thermal nodes

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Message-ID: <20251027093133.2344267-3-max.oss.09@gmail.com>
Date: Mon, 27 Oct 2025 10:30:08 +0100
From: max.oss.09@...il.com
To: Max Krummenacher <max.krummenacher@...adex.com>,
	Stefan Eichenberger <stefan.eichenberger@...adex.com>
Cc: Conor Dooley <conor+dt@...nel.org>,
	Fabio Estevam <festevam@...il.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Rob Herring <robh@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 2/5] arm64: dts: imx8-apalis: add thermal nodes

From: Max Krummenacher <max.krummenacher@...adex.com>

Add the thermal-zones and cooling-maps nodes for the PMIC device.

Signed-off-by: Max Krummenacher <max.krummenacher@...adex.com>
---

 .../boot/dts/freescale/imx8-apalis-v1.1.dtsi  | 30 +++++++++++++++++--
 .../dts/freescale/imx8qm-apalis-v1.1.dtsi     | 10 ++++++-
 2 files changed, 37 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi b/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi
index 6ebeade2ce72..686fce7443bb 100644
--- a/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi
@@ -226,6 +226,34 @@ sound-spdif {
 		spdif-out;
 	};
 
+	thermal-zones {
+		pmic-thermal {
+			polling-delay-passive = <250>;
+			polling-delay = <2000>;
+			thermal-sensors = <&tsens IMX_SC_R_PMIC_0>;
+
+			cooling-maps {
+				cooling_maps_map0: map0 {
+					trip = <&pmic_alert0>;
+				};
+			};
+
+			trips {
+				pmic_alert0: trip0 {
+					hysteresis = <2000>;
+					temperature = <110000>;
+					type = "passive";
+				};
+
+				pmic_crit0: trip1 {
+					hysteresis = <2000>;
+					temperature = <125000>;
+					type = "critical";
+				};
+			};
+		};
+	};
+
 	touchscreen: touchscreen {
 		compatible = "toradex,vf50-touchscreen";
 		interrupt-parent = <&lsio_gpio3>;
@@ -833,8 +861,6 @@ &spdif0 {
 	status = "okay";
 };
 
-/* TODO: Thermal Zones */
-
 /* TODO: Apalis USBH2, Apalis USBH3 and on-module Wi-Fi via on-module HSIC Hub */
 
 /* Apalis USBH4 */
diff --git a/arch/arm64/boot/dts/freescale/imx8qm-apalis-v1.1.dtsi b/arch/arm64/boot/dts/freescale/imx8qm-apalis-v1.1.dtsi
index b1c3f331c4ed..8a37cbe922ac 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-apalis-v1.1.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm-apalis-v1.1.dtsi
@@ -11,4 +11,12 @@ / {
 	model = "Toradex Apalis iMX8QM V1.1";
 };
 
-/* TODO: Cooling Maps */
+&cooling_maps_map0 {
+	cooling-device =
+		<&A53_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+		<&A53_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+		<&A53_2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+		<&A53_3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+		<&A72_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+		<&A72_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+};
-- 
2.42.0