Hi Markus, Levin and all, rk3399-roc-pc board has three on-board LED's: 1. work-led(green) assigned as linux,default-trigger = "heartbeat" 2. diy-led(red) assigned as linux,default-trigger = "mmc1" ---- which is emmc 3. yellow-led(yellow) assigned as linux,default-trigger = "mmc0" ---- which is SD I have a requirement where diy-led(red) should be on while linux boots and until poweroff, indicating full power mode. here are my questions: 1. Since diy-led(red) is already assigned to mmc1, how could I achieve the above requirement. In the diy-led node I changed default-state to "on", but it didn't work. 2. Is there any specific reason why diy-led(red) is assigned to mmc1 ? 3. Is it possible to swap work-led with diy-led, meaning work-led assigned to "mmc1" and diy-led assigned as "heartbeat" or "default-on" ? Please suggest/comment on my requirement. Thanks and regards Suniel _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip