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ARM: bcm2835: Add Raspberry Pi's ACT LED to DT 

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>
This commit is contained in:
Daniel Mack 2013-04-28 22:49:52 +02:00 committed by Stephen Warren
parent f722406faa
commit 805b4db807
1 changed files with 11 additions and 0 deletions
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11
arch/arm/boot/dts/bcm2835-rpi-b.dts
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@ -8,6 +8,17 @@ / {
memory {
reg = <0 0x10000000>;
};
leds {
compatible = "gpio-leds";
act {
label = "ACT";
gpios = <&gpio 16 1>;
default-state = "keep";
linux,default-trigger = "heartbeat";
};
};
};
&gpio {