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    Subject[PATCH 1/2] devicetree: i2c-hid: Add regulator support
    Date
    From: Caesar Wang <wxt@rock-chips.com>

    Document a "vdd-supply" and an initialization delay. Can be used for
    powering on/off a HID.

    Signed-off-by: Caesar Wang <wxt@rock-chips.com>
    Cc: Rob Herring <robh+dt@kernel.org>
    Cc: Jiri Kosina <jikos@kernel.org>
    Cc: linux-input@vger.kernel.org
    Signed-off-by: Brian Norris <briannorris@chromium.org>
    ---
    v2:
    * add compatible property for wacom, per Rob's request
    * name the regulator property specifically (VDD)

    v3:
    * remove wacom property, per Benjamin's request
    * add delay property

    v4: no change
    ---
    Documentation/devicetree/bindings/input/hid-over-i2c.txt | 5 +++++
    1 file changed, 5 insertions(+)

    diff --git a/Documentation/devicetree/bindings/input/hid-over-i2c.txt b/Documentation/devicetree/bindings/input/hid-over-i2c.txt
    index 488edcb264c4..1ea290167652 100644
    --- a/Documentation/devicetree/bindings/input/hid-over-i2c.txt
    +++ b/Documentation/devicetree/bindings/input/hid-over-i2c.txt
    @@ -17,6 +17,11 @@ Required properties:
    - interrupt-parent: the phandle for the interrupt controller
    - interrupts: interrupt line

    +Optional properties:
    +- vdd-supply: phandle of the regulator that provides the supply voltage.
    +- init-delay-ms: time required by the device after power-on before it is ready
    + for communication.
    +
    Example:

    i2c-hid-dev@2c {
    --
    2.8.0.rc3.226.g39d4020
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