1Common leds properties. 2 3Optional properties for child nodes: 4- label : The label for this LED. If omitted, the label is 5 taken from the node name (excluding the unit address). 6 7- linux,default-trigger : This parameter, if present, is a 8 string defining the trigger assigned to the LED. Current triggers are: 9 "backlight" - LED will act as a back-light, controlled by the framebuffer 10 system 11 "default-on" - LED will turn on (but for leds-gpio see "default-state" 12 property in Documentation/devicetree/bindings/gpio/led.txt) 13 "heartbeat" - LED "double" flashes at a load average based rate 14 "ide-disk" - LED indicates disk activity 15 "timer" - LED flashes at a fixed, configurable rate 16 17Examples: 18 19system-status { 20 label = "Status"; 21 linux,default-trigger = "heartbeat"; 22 ... 23}; 24