arm64: dts: rockchip: Update leds for Odroid Go Advance

Update the blue LED to be controlled via pwm to enable control of LED
brightness. Add red LED as a GPIO controlled LED. The documentation
stated "label" was depreciated so function and color was used instead.
The LED names (led-2 and led-3) are given because that is what they
are numbered on the board itself; LED 1 is wired directly into an
always on regulator and is not controllable. LED 2 is labelled "alive"
on the board and documentation recommends we set the function as
status over other miscellaneous functions. LED 3 is labelled "chg" on
the board.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20221201203655.1245-5-macroalpha82@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3326-odroid-go.dtsi b/arch/arm64/boot/dts/rockchip/rk3326-odroid-go.dtsi
index 802be64..04eba43 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3326-odroid-go.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3326-odroid-go.dtsi
@@ -8,6 +8,7 @@
 /dts-v1/;
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
 #include <dt-bindings/pinctrl/rockchip.h>
 #include "rk3326.dtsi"
 
@@ -113,15 +114,29 @@
                };
        };
 
-       leds: gpio-leds {
+       /* led-1 is wired directly to output of always-on regulator */
+
+       gpio_led: gpio-leds {
                compatible = "gpio-leds";
                pinctrl-names = "default";
-               pinctrl-0 = <&blue_led_pin>;
+               pinctrl-0 = <&red_led_pin>;
+
+               red_led: led-3 {
+                       color = <LED_COLOR_ID_RED>;
+                       gpios = <&gpio0 RK_PB5 GPIO_ACTIVE_HIGH>;
+                       function = LED_FUNCTION_CHARGING;
+               };
+       };
 
-               blue_led: led-0 {
-                       label = "blue:heartbeat";
-                       gpios = <&gpio0 RK_PC1 GPIO_ACTIVE_HIGH>;
+       pwm_led: led-controller {
+               compatible = "pwm-leds";
+
+               blue_led: led-2 {
+                       color = <LED_COLOR_ID_BLUE>;
+                       function = LED_FUNCTION_STATUS;
                        linux,default-trigger = "heartbeat";
+                       max-brightness = <255>;
+                       pwms = <&pwm3 0 25000 0>;
                };
        };
 
@@ -465,6 +480,10 @@
        status = "okay";
 };
 
+&pwm3 {
+       status = "okay";
+};
+
 &saradc {
        vref-supply = <&vcc_1v8>;
        status = "okay";
@@ -569,8 +588,8 @@
        };
 
        leds {
-               blue_led_pin: blue-led-pin {
-                       rockchip,pins = <0 RK_PC1 RK_FUNC_GPIO &pcfg_pull_none>;
+               red_led_pin: red-led-pin {
+                       rockchip,pins = <0 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>;
                };
        };