forked from Minki/linux
99b4ffbd84
Wakeup property of device is not Linux-specific, it describes intended system behavior regardless of the OS being used. Therefore let's drop "linux," prefix, and, while at it, use the same name as I2C bus does: "wakeup-source". We keep parsing old name to keep compatibility with old DTSes. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
49 lines
1.4 KiB
Plaintext
49 lines
1.4 KiB
Plaintext
Device-Tree bindings for input/gpio_keys.c keyboard driver
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Required properties:
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- compatible = "gpio-keys";
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Optional properties:
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- autorepeat: Boolean, Enable auto repeat feature of Linux input
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subsystem.
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Each button (key) is represented as a sub-node of "gpio-keys":
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Subnode properties:
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- gpios: OF device-tree gpio specification.
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- interrupts: the interrupt line for that input.
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- label: Descriptive name of the key.
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- linux,code: Keycode to emit.
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Note that either "interrupts" or "gpios" properties can be omitted, but not
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both at the same time. Specifying both properties is allowed.
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Optional subnode-properties:
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- linux,input-type: Specify event type this button/key generates.
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If not specified defaults to <1> == EV_KEY.
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- debounce-interval: Debouncing interval time in milliseconds.
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If not specified defaults to 5.
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- wakeup-source: Boolean, button can wake-up the system.
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- linux,can-disable: Boolean, indicates that button is connected
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to dedicated (not shared) interrupt which can be disabled to
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suppress events from the button.
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Example nodes:
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gpio_keys {
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compatible = "gpio-keys";
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#address-cells = <1>;
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#size-cells = <0>;
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autorepeat;
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button@21 {
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label = "GPIO Key UP";
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linux,code = <103>;
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gpios = <&gpio1 0 1>;
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};
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button@22 {
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label = "GPIO Key DOWN";
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linux,code = <108>;
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interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
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};
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...
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