On Mon, Aug 18, 2014 at 03:13:29PM -0500, Nishanth Menon wrote:
> Many palmas family of PMICs have support for interrupt based power
> button. This allows the device to notify the processor of external
> push button events over the shared palmas interrupt.
>
> Document the hardware support for the same.
>
> Signed-off-by: Nishanth Menon <nm@xxxxxx>
> ---
> .../bindings/input/ti,palmas-pwrbutton.txt | 32 ++++++++++++++++++++
> 1 file changed, 32 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/input/ti,palmas-pwrbutton.txt
>
> diff --git a/Documentation/devicetree/bindings/input/ti,palmas-pwrbutton.txt b/Documentation/devicetree/bindings/input/ti,palmas-pwrbutton.txt
> new file mode 100644
> index 0000000..6a89bcd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/ti,palmas-pwrbutton.txt
> @@ -0,0 +1,32 @@
> +Texas Instruments Palmas family power button module
> +
> +This module is part of the Palmas family of PMICs. For more details
> +about the whole chip see:
> +Documentation/devicetree/bindings/mfd/palmas.txt.
> +
> +This module provides a simple power button event via an Interrupt.
> +
> +Required properties:
> +- compatible: should be one of the following
> + - "ti,palmas-pwrbutton": For Palmas compatible power on button
> +- interrupt-parent: Parent interrupt device, must be handle of palmas node.
> +- interrupts: Interrupt number of power button submodule on device.
> +
> +Optional Properties:
> +
> +- ti,palmas-long-press-seconds: Duration in seconds which the power
> + button should be kept pressed for Palmas to power off automatically.
> + NOTE: This depends on OTP support and POWERHOLD signal configuration
> + on platform.
Only a few values are valid for this property, I think you should mention that.
> +
> +Example:
> +
> +&palmas {
> + palmas_pwr_button: pwrbutton {
> + compatible = "ti,palmas-pwrbutton";
> + interrupt-parent = <&tps659038>;
> + interrupts = <1 IRQ_TYPE_NONE>;
Why none? Can we specify appropriate trigger here instead of hard-coding in the
driver?
> + wakeup-source;
What handles this attribute? I do not see it handled in the driver.
> + ti,palmas-long-press-seconds = <12>;
> + };
> +};
> --
> 1.7.9.5
>
Thanks.
--
Dmitry
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