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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-05-08 18:29:27 -0700 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-05-08 18:29:27 -0700 |
commit | d585a021c0b10b0477d6b608c53e1feb8cde0507 (patch) | |
tree | 5ca059da1db7f15d4b29427644ad9c08270c885c /Documentation/powerpc/dts-bindings/gpio/led.txt | |
parent | 84e5b0d00f8f84c4ae226be131d4bebbcee88bd3 (diff) | |
parent | 091bf7624d1c90cec9e578a18529f615213ff847 (diff) |
Merge commit 'v2.6.30-rc5' into next
Diffstat (limited to 'Documentation/powerpc/dts-bindings/gpio/led.txt')
-rw-r--r-- | Documentation/powerpc/dts-bindings/gpio/led.txt | 46 |
1 files changed, 37 insertions, 9 deletions
diff --git a/Documentation/powerpc/dts-bindings/gpio/led.txt b/Documentation/powerpc/dts-bindings/gpio/led.txt index ff51f4c0fa9..4fe14deedc0 100644 --- a/Documentation/powerpc/dts-bindings/gpio/led.txt +++ b/Documentation/powerpc/dts-bindings/gpio/led.txt @@ -1,15 +1,43 @@ -LED connected to GPIO +LEDs connected to GPIO lines Required properties: -- compatible : should be "gpio-led". -- label : (optional) the label for this LED. If omitted, the label is +- compatible : should be "gpio-leds". + +Each LED is represented as a sub-node of the gpio-leds device. Each +node's name represents the name of the corresponding LED. + +LED sub-node properties: +- gpios : Should specify the LED's GPIO, see "Specifying GPIO information + for devices" in Documentation/powerpc/booting-without-of.txt. Active + low LEDs should be indicated using flags in the GPIO specifier. +- label : (optional) The label for this LED. If omitted, the label is taken from the node name (excluding the unit address). -- gpios : should specify LED GPIO. +- linux,default-trigger : (optional) 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 + "heartbeat" - LED "double" flashes at a load average based rate + "ide-disk" - LED indicates disk activity + "timer" - LED flashes at a fixed, configurable rate -Example: +Examples: -led@0 { - compatible = "gpio-led"; - label = "hdd"; - gpios = <&mcu_pio 0 1>; +leds { + compatible = "gpio-leds"; + hdd { + label = "IDE Activity"; + gpios = <&mcu_pio 0 1>; /* Active low */ + linux,default-trigger = "ide-disk"; + }; }; + +run-control { + compatible = "gpio-leds"; + red { + gpios = <&mpc8572 6 0>; + }; + green { + gpios = <&mpc8572 7 0>; + }; +} |