arm64: dts: rockchip: add fan support to rock-5a

Add the necessary DT changes for the Rock 5A board to enable support for
the PWM controlled heat sink fan.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20230710165228.105983-14-sebastian.reichel@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
index deb87b9..6389cc4 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts
@@ -47,6 +47,14 @@
                };
        };
 
+       fan: pwm-fan {
+               compatible = "pwm-fan";
+               cooling-levels = <0 95 145 195 255>;
+               fan-supply = <&vcc_5v0>;
+               pwms = <&pwm3 0 50000 0>;
+               #cooling-cells = <2>;
+       };
+
        vcc12v_dcin: vcc12v-dcin-regulator {
                compatible = "regulator-fixed";
                regulator-name = "vcc12v_dcin";
@@ -286,6 +294,12 @@
        };
 };
 
+&pwm3 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pwm3m1_pins>;
+       status = "okay";
+};
+
 &saradc {
        vref-supply = <&avcc_1v8_s0>;
        status = "okay";