From 7e14cc4cd006888a6f2dc12ac5de258ec29948d5 Mon Sep 17 00:00:00 2001
From: Frank Wunderlich <frank-w@public-files.de>
Date: Sat, 20 Apr 2024 12:00:26 +0200
Subject: [PATCH] arm64: dts: make pwm-fan work on r4

add new fan speed setting to fix bind error because of zero-index
cooling-points.

[    5.080681] thermal_sys: Failed to bind 'cpu-thermal' with 'pwm-fan': -22

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
---
 arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts | 9 +++++++++
 arch/arm64/boot/dts/mediatek/mt7988a.dtsi                | 4 ++--
 2 files changed, 11 insertions(+), 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
index de138930bf10..10e24f802b10 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
@@ -318,6 +318,15 @@
 	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
index 4a5110586b6d..3653ccb746f3 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
@@ -121,8 +121,8 @@
 
 	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";