Disable power LED

Bruno · July 4, 2023, 8:43pm

The green power led is very annoying as it is always on when power supply is connected.
Lights up the room.
Can I disable the green power LED?
At least when the board is shut down and PS is still connected.

staff_Armstrong · July 8, 2023, 3:19pm

This is probably not possible, it is directly grounded through a resistor, as long as the power supply is normal, it will light up, unlike other colors that can be controlled by a triode.
Edit:
Note: This is the Rock5b’s schematics.

nyanmisaka · July 5, 2023, 9:25am

There’s no definition in dts for the green led on 5b when comparing with 5a.

github.com

armbian/linux-rockchip/blob/e0752798ffea09dd9865a0fa35f0bf9a0ae0acca/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts#L197-L201


		user-led2 {
			gpios = <&gpio0 RK_PB7 GPIO_ACTIVE_HIGH>;
			linux,default-trigger = "heartbeat";
			default-state = "on";
		};

github.com

armbian/linux-rockchip/blob/e0752798ffea09dd9865a0fa35f0bf9a0ae0acca/arch/arm64/boot/dts/rockchip/rk3588s-rock-5a.dts#L158-L168


		user-led1 {
			gpios = <&gpio3 RK_PC4 GPIO_ACTIVE_HIGH>;
			linux,default-trigger = "default-on";
			default-state = "on";
		};


		user-led2 {
			gpios = <&gpio3 RK_PD5 GPIO_ACTIVE_HIGH>;
			linux,default-trigger = "heartbeat";
			default-state = "on";
		};

On 5a you can disable the green led by runing

sudo sh -c "echo none > /sys/class/leds/user-led1/trigger"