arm64: dts: rockchip: Update leds for Anbernic RGxx3 Series

Each of the LEDs on the RGxx3 which is currently controlled via GPIO
can also be controlled via a PWM. Change each of the LEDs to PWM so
that users have the ability to adjust the brightness of the LEDs
according to their preference.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20230512191633.33416-1-macroalpha82@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3566-anbernic-rgxx3.dtsi b/arch/arm64/boot/dts/rockchip/rk3566-anbernic-rgxx3.dtsi
index 8fadd8a..69f3327 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3566-anbernic-rgxx3.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3566-anbernic-rgxx3.dtsi
@@ -191,30 +191,30 @@
                };
        };
 
-       leds: gpio-leds {
-               compatible = "gpio-leds";
-               pinctrl-0 = <&led_pins>;
-               pinctrl-names = "default";
+       leds: pwm-leds {
+               compatible = "pwm-leds";
 
                green_led: led-0 {
                        color = <LED_COLOR_ID_GREEN>;
                        default-state = "on";
                        function = LED_FUNCTION_POWER;
-                       gpios = <&gpio0 RK_PC5 GPIO_ACTIVE_HIGH>;
+                       max-brightness = <255>;
+                       pwms = <&pwm6 0 25000 0>;
                };
 
                amber_led: led-1 {
                        color = <LED_COLOR_ID_AMBER>;
                        function = LED_FUNCTION_CHARGING;
-                       gpios = <&gpio0 RK_PC6 GPIO_ACTIVE_HIGH>;
-                       retain-state-suspended;
+                       max-brightness = <255>;
+                       pwms = <&pwm7 0 25000 0>;
                };
 
                red_led: led-2 {
                        color = <LED_COLOR_ID_RED>;
                        default-state = "off";
                        function = LED_FUNCTION_STATUS;
-                       gpios = <&gpio0 RK_PC7 GPIO_ACTIVE_HIGH>;
+                       max-brightness = <255>;
+                       pwms = <&pwm0 0 25000 0>;
                };
        };
 
@@ -597,15 +597,6 @@
                };
        };
 
-       gpio-led {
-               led_pins: led-pins {
-                       rockchip,pins =
-                               <0 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>,
-                               <0 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>,
-                               <0 RK_PC7 RK_FUNC_GPIO &pcfg_pull_none>;
-               };
-       };
-
        joy-mux {
                joy_mux_en: joy-mux-en {
                        rockchip,pins =
@@ -654,10 +645,24 @@
        vccio7-supply = <&vcc_3v3>;
 };
 
+&pwm0 {
+       pinctrl-0 = <&pwm0m1_pins>;
+       pinctrl-names = "default";
+       status = "okay";
+};
+
 &pwm5 {
        status = "okay";
 };
 
+&pwm6 {
+       status = "okay";
+};
+
+&pwm7 {
+       status = "okay";
+};
+
 &saradc {
        vref-supply = <&vcc_1v8>;
        status = "okay";