[openwrt/openwrt] mediatek: filogic: BPi-R4: wire up pinctrl for pwm-fan

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/591272d197c4866b82f0ed638efe54673f2ab490

commit 591272d197c4866b82f0ed638efe54673f2ab490
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Sat Nov 2 20:17:52 2024 +0000

    mediatek: filogic: BPi-R4: wire up pinctrl for pwm-fan
    
    Assign pwm function of PWM0 pin to the pwm-fan.
    This is mostly just cosmetics as it basically reflects the default
    setting of that pin.
    
    Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
 .../arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/target/linux/mediatek/files-6.6/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi b/target/linux/mediatek/files-6.6/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi
index fae5d0ebfa..c4455fbc74 100644
--- a/target/linux/mediatek/files-6.6/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi
+++ b/target/linux/mediatek/files-6.6/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi
@@ -297,11 +297,22 @@
 	status = "okay";
 };
 
+&pio {
+	pwm0_pins: pwm0-pins {
+		mux {
+			groups = "pwm0";
+			function = "pwm";
+		};
+	};
+};
+
 &pwm {
 	status = "okay";
 };
 
 &fan {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm0_pins>;
 	pwms = <&pwm 0 50000>;
 	status = "okay";
 };