[PATCH v3 3/4] riscv: dts: starfive: enable heartbeat LED for Pine64 Star64

[FUKAUMI Naoki]

Pine64 Star64 has a blue LED to show system load[1]. This patch
enables a blue LED as a heartbeat LED.

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

[1] https://github.com/Fishwaldo/Star64_linux/blob/Star64_devel/arch/riscv/boot/dts/starfive/jh7110-pine64-star64.dtsi#L79

Changes in v3:
- add default-state = "on" to turn LED on at U-Boot (not enabled yet)
Changes in v2:
- new
---
 .../boot/dts/starfive/jh7110-pine64-star64.dts     | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-pine64-star64.dts b/arch/riscv/boot/dts/starfive/jh7110-pine64-star64.dts
index 2d41f18e0359..b9962b4e8eca 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-pine64-star64.dts
+++ b/arch/riscv/boot/dts/starfive/jh7110-pine64-star64.dts
@@ -4,6 +4,8 @@
  */
 
 /dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
 #include "jh7110-common.dtsi"
 
 / {
@@ -12,6 +14,18 @@ / {
 	aliases {
 		ethernet1 = &gmac1;
 	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			gpios = <&aongpio 3 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_BLUE>;
+			default-state = "on";
+			function = LED_FUNCTION_HEARTBEAT;
+			linux,default-trigger = "heartbeat";
+		};
+	};
 };
 
 &gmac0 {
-- 
2.43.0