From 194a741645a4f1cbcd8e5acd9e93664141c97aca Mon Sep 17 00:00:00 2001
From: Yannic Moog <y.moog@phytec.de>
Date: Tue, 24 Sep 2024 09:53:04 +0200
Subject: [PATCH] arm64: dts: imx8mp-phyboard-pollux-rdk: add gpio-fan
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A GPIO fan may be connected to Pollux fan header. The fan should
activate at 60°C and stay active until critical SoC temperature is
reached and the board shuts down.

Signed-off-by: Yannic Moog <y.moog@phytec.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---
 .../freescale/imx8mp-phyboard-pollux-rdk.dts  | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
index 50debe821c42..9b551a50533f 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
@@ -9,6 +9,7 @@
 #include <dt-bindings/phy/phy-imx8-pcie.h>
 #include <dt-bindings/leds/leds-pca9532.h>
 #include <dt-bindings/pwm/pwm.h>
+#include <dt-bindings/thermal/thermal.h>
 #include "imx8mp-phycore-som.dtsi"
 
 / {
@@ -32,6 +33,16 @@
 		pwms = <&pwm3 0 50000 0>;
 	};
 
+	fan0: fan {
+		compatible = "gpio-fan";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_fan>;
+		gpio-fan,speed-map = <0     0
+				      13000 1>;
+		gpios = <&gpio5 4 GPIO_ACTIVE_HIGH>;
+		#cooling-cells = <2>;
+	};
+
 	panel1_lvds: panel-lvds {
 		compatible = "edt,etml1010g3dra";
 		backlight = <&backlight_lvds>;
@@ -111,6 +122,25 @@
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 	};
+
+	thermal-zones {
+		soc-thermal {
+			trips {
+				active1: trip2 {
+					temperature = <60000>;
+					hysteresis = <2000>;
+					type = "active";
+				};
+			};
+
+			cooling-maps {
+				map1 {
+					trip = <&active1>;
+					cooling-device = <&fan0 1 THERMAL_NO_LIMIT>;
+				};
+			};
+		};
+	};
 };
 
 /* TPM */
@@ -377,6 +407,12 @@
 		>;
 	};
 
+	pinctrl_fan: fan0grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SPDIF_RX__GPIO5_IO04       0x16
+		>;
+	};
+
 	pinctrl_flexcan1: flexcan1grp {
 		fsl,pins = <
 			MX8MP_IOMUXC_SAI5_RXD2__CAN1_RX		0x154
-- 
2.50.1