openwrt/target/linux/mediatek/patches-6.1/018-v6.5-arm64-dts-mt7986-add-pwm-fan-and-cooling-maps-to-BPI.patch

From 5d90603b09e5814ffc38c47e79ccf9bc564f9296 Mon Sep 17 00:00:00 2001
From: Daniel Golle <[email protected]>
Date: Tue, 30 May 2023 22:12:35 +0200
Subject: [PATCH 18/19] arm64: dts: mt7986: add pwm-fan and cooling-maps to
 BPI-R3 dts

Add pwm-fan and cooling-maps to BananaPi-R3 devicetree.

Signed-off-by: Daniel Golle <[email protected]>
Signed-off-by: Frank Wunderlich <[email protected]>
Reviewed-by: AngeloGioacchino Del Regno <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Matthias Brugger <[email protected]>
---
 .../dts/mediatek/mt7986a-bananapi-bpi-r3.dts  | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)

--- a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
@@ -38,6 +38,15 @@
 		regulator-always-on;
 	};
 
+	fan: pwm-fan {
+		compatible = "pwm-fan";
+		#cooling-cells = <2>;
+		/* cooling level (0, 1, 2) - pwm inverted */
+		cooling-levels = <255 96 0>;
+		pwms = <&pwm 0 10000 0>;
+		status = "okay";
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 
@@ -133,6 +142,28 @@
 	};
 };
 
+&cpu_thermal {
+	cooling-maps {
+		cpu-active-high {
+			/* active: set fan to cooling level 2 */
+			cooling-device = <&fan 2 2>;
+			trip = <&cpu_trip_active_high>;
+		};
+
+		cpu-active-low {
+			/* active: set fan to cooling level 1 */
+			cooling-device = <&fan 1 1>;
+			trip = <&cpu_trip_active_low>;
+		};
+
+		cpu-passive {
+			/* passive: set fan to cooling level 0 */
+			cooling-device = <&fan 0 0>;
+			trip = <&cpu_trip_passive>;
+		};
+	};
+};
+
 &crypto {
 	status = "okay";
 };