mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 02:38:56 +00:00
5917112c9e
Add a simple uclass for LEDs, so that these can be controlled by the device tree and activated when needed. LEDs are referred to by their label. This implementation requires a driver for each type of LED (e.g GPIO, I2C). Signed-off-by: Simon Glass <sjg@chromium.org>
23 lines
814 B
Text
23 lines
814 B
Text
Common leds properties.
|
|
|
|
Optional properties for child nodes:
|
|
- label : The label for this LED. If omitted, the label is
|
|
taken from the node name (excluding the unit address).
|
|
|
|
- linux,default-trigger : This parameter, if present, is a
|
|
string defining the trigger assigned to the LED. Current triggers are:
|
|
"backlight" - LED will act as a back-light, controlled by the framebuffer
|
|
system
|
|
"default-on" - LED will turn on (but for leds-gpio see "default-state"
|
|
property in Documentation/devicetree/bindings/gpio/led.txt)
|
|
"heartbeat" - LED "double" flashes at a load average based rate
|
|
"ide-disk" - LED indicates disk activity
|
|
"timer" - LED flashes at a fixed, configurable rate
|
|
|
|
Examples:
|
|
|
|
system-status {
|
|
label = "Status";
|
|
linux,default-trigger = "heartbeat";
|
|
...
|
|
};
|