[PATCH v3 2/4] riscv: dts: starfive: enable heartbeat LED for Milk-V Mars

[FUKAUMI Naoki]

Milk-V Mars has a green LED to show system load[1]. This patch enables
a green LED as a heartbeat LED.

Signed-off-by: FUKAUMI Naoki <naoki at milkv.io>

[1] https://github.com/milkv-mars/mars-buildroot-sdk/blob/dev/linux/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dtsi#L79

Changes in v3:
- add default-state = "on" to turn LED on at U-Boot (not enabled yet)
Changes in v2:
- reorder properties in led-0
---
 arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts b/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts
index 5cb9e99e1dac..5cae7a5d2f86 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts
+++ b/arch/riscv/boot/dts/starfive/jh7110-milkv-mars.dts
@@ -4,11 +4,25 @@
  */
 
 /dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
 #include "jh7110-common.dtsi"
 
 / {
 	model = "Milk-V Mars";
 	compatible = "milkv,mars", "starfive,jh7110";
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			gpios = <&aongpio 3 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_GREEN>;
+			default-state = "on";
+			function = LED_FUNCTION_HEARTBEAT;
+			linux,default-trigger = "heartbeat";
+		};
+	};
 };
 
 &gmac0 {
-- 
2.43.0