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leds: leds-gpio: add retain-state-suspended property

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Some gpio-leds need retain the state even in suspend, such as charger led.
But this property missed in devicetree, add it.

([email protected]: fold DT binding updates into this patch)

Signed-off-by: Robin Gong <[email protected]>
Signed-off-by: Bryan Wu <[email protected]>
This commit is contained in:
Robin Gong 2014-01-20 03:41:26 -08:00 • committed by Bryan Wu
commit 4270a78d23
2 changed files with 15 additions and 0 deletions
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12
Documentation/devicetree/bindings/leds/leds-gpio.txt
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@ -21,6 +21,8 @@ LED sub-node properties:
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.
- retain-state-suspended: (optional) The suspend state can be retained.Such
as charge-led gpio.
Examples:
@ -50,3 +52,13 @@ run-control {
default-state = "on";
};
};
leds {
compatible = "gpio-leds";
charger-led {
gpios = <&gpio1 2 0>;
linux,default-trigger = "max8903-charger-charging";
retain-state-suspended;
};
};