diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-07-01 09:56:10 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-07-01 09:56:26 +0200 |
commit | 087021ba41e9481202103d51d3dd0c4706899a2b (patch) | |
tree | bf5d67420fd176682a1f8f1e9342ad397c23937a /Documentation/powerpc/dts-bindings/gpio/led.txt | |
parent | fb9c818873a788c5c01c9868cc6050df96e2c7df (diff) | |
parent | e83c2b0ff325f52dda1aff3572d0e1516216c54b (diff) |
Merge branch 'linus' into perfcounters/urgent
Merge reason: this branch was on a .30-ish base before, update
it to an almost-.31-rc2 upstream base to pick up fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/powerpc/dts-bindings/gpio/led.txt')
-rw-r--r-- | Documentation/powerpc/dts-bindings/gpio/led.txt | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/Documentation/powerpc/dts-bindings/gpio/led.txt b/Documentation/powerpc/dts-bindings/gpio/led.txt index 4fe14deedc0..064db928c3c 100644 --- a/Documentation/powerpc/dts-bindings/gpio/led.txt +++ b/Documentation/powerpc/dts-bindings/gpio/led.txt @@ -16,10 +16,17 @@ LED sub-node properties: 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 + "default-on" - LED will turn on, but see "default-state" below "heartbeat" - LED "double" flashes at a load average based rate "ide-disk" - LED indicates disk activity "timer" - LED flashes at a fixed, configurable rate +- default-state: (optional) The initial state of the LED. Valid + values are "on", "off", and "keep". If the LED is already on or off + and the default-state property is set the to same value, then no + glitch should be produced where the LED momentarily turns off (or + on). The "keep" setting will keep the LED at whatever its current + state is, without producing a glitch. The default is off if this + property is not present. Examples: @@ -30,14 +37,22 @@ leds { gpios = <&mcu_pio 0 1>; /* Active low */ linux,default-trigger = "ide-disk"; }; + + fault { + gpios = <&mcu_pio 1 0>; + /* Keep LED on if BIOS detected hardware fault */ + default-state = "keep"; + }; }; run-control { compatible = "gpio-leds"; red { gpios = <&mpc8572 6 0>; + default-state = "off"; }; green { gpios = <&mpc8572 7 0>; + default-state = "on"; }; } |