linux-kernel - Re: [PATCH v3 1/3] dt-bindings: input: add Elan 400 combo keyboard/touchpad over i2c

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Date:   Thu, 18 Apr 2019 11:35:42 +0200
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Jeffrey Hugo <jeffrey.l.hugo@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>, mark.rutland@....com,
        Lee Jones <lee.jones@...aro.org>, bjorn.andersson@...aro.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>, agross@...nel.org,
        David Brown <david.brown@...aro.org>,
        Jiri Kosina <jikos@...nel.org>,
        "open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/3] dt-bindings: input: add Elan 400 combo
 keyboard/touchpad over i2c

On Mon, Apr 15, 2019 at 6:11 PM Jeffrey Hugo <jeffrey.l.hugo@...il.com> wrote:
>
> The Elan 400 combo keyboard/touchpad over i2c device is a distinct device
> from the Elan 400 standalone touchpad device.  The combo device has been
> found in the Lenovo Miix 630 and HP Envy x2 laptops.
>
> Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@...il.com>
> ---

With my comments in 2/3, I wonder if you need this patch at all then.

Cheers,
Benjamin

>  .../devicetree/bindings/input/elan,combo400-i2c.txt   | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/elan,combo400-i2c.txt
>
> diff --git a/Documentation/devicetree/bindings/input/elan,combo400-i2c.txt b/Documentation/devicetree/bindings/input/elan,combo400-i2c.txt
> new file mode 100644
> index 000000000000..fb700a29148d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/elan,combo400-i2c.txt
> @@ -0,0 +1,11 @@
> +Elantech 0400 I2C combination Keyboard/Touchpad
> +
> +This binding describes an Elan device with pid 0x0400, that is a combination
> +keyboard + touchpad device.  This binding does not cover an Elan device with
> +pid 0x0400 that is solely a standalone touchpad device.
> +
> +Required properties:
> +- compatible: should be "elan,combo400-i2c"
> +
> +This binding is compatible with the HID over I2C binding, which is specified
> +in hid-over-i2c.txt in this directory.
> --
> 2.17.1
>