The Raspberry Pi board has one GPIO-controlled LED labeled "ACT". Add it
to the DT via the gpio-leds driver, so users can control it from
userspace. If CONFIG_LEDS_TRIGGER_HEARTBEAT is set, the LED will also
signal some sign of life.
The GPIO circuitry is low-active. And as the bootloader may decide to
switch the LED on at boot time, the default state is 'keep'.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
memory {
reg = <0 0x10000000>;
};
+
+ leds {
+ compatible = "gpio-leds";
+
+ act {
+ label = "ACT";
+ gpios = <&gpio 16 1>;
+ default-state = "keep";
+ linux,default-trigger = "heartbeat";
+ };
+ };
};
&gpio {