arm64: dts: make pwm-fan work on r4

fix bind error because of zero-index cooling-points add new fan speed setting [ 5.080681] thermal_sys: Failed to bind 'cpu-thermal' with 'pwm-fan': -22
frank-w · Apr 27, 2024 · 240c11c · 240c11c
1 parent da243a6
commit 240c11c
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Showing 2 changed files with 11 additions and 2 deletions.
diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
@@ -315,6 +315,15 @@
 	status = "okay";
 };
 
+&pwm {
+	status = "okay";
+};
+
+&fan {
+	pwms = <&pwm 0 50000>;
+	status = "okay";
+};
+
 &ssusb1 {
 	status = "okay";
 };

diff --git a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
@@ -131,8 +131,8 @@
 
 	fan: pwm-fan {
 		compatible = "pwm-fan";
-		/* cooling level (0, 1, 2) : (0% duty, 50% duty, 100% duty) */
-		cooling-levels = <0 128 255>;
+		/* cooling level (0, 1, 2, 3) : (0% duty, 30% duty, 50% duty, 100% duty) */
+		cooling-levels = <0 80 128 255>;
 		#cooling-cells = <2>;
 		#thermal-sensor-cells = <1>;
 		status = "disabled";