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From:   Philip Chen <philipchen@chromium.org>
Date:   Tue, 12 Jan 2021 15:29:11 -0800
Message-ID: <CA+cxXhkXJGYx0SQ-S7B=6iHAWFoCQpokw7huaGTNKbVmP1JDhA@mail.gmail.com>
Subject: Re: [PATCH v4 1/2] dt-bindings: input: cros-ec-keyb: Add a new property
To:     Stephen Boyd <swboyd@chromium.org>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        Douglas Anderson <dianders@chromium.org>,
        Benson Leung <bleung@chromium.org>,
        Enric Balletbo i Serra <enric.balletbo@collabora.com>,
        Guenter Roeck <groeck@chromium.org>,
        Rob Herring <robh+dt@kernel.org>,
        Simon Glass <sjg@chromium.org>, devicetree@vger.kernel.org,
        linux-input@vger.kernel.org
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On Mon, Jan 11, 2021 at 6:10 PM Stephen Boyd <swboyd@chromium.org> wrote:
>
> Quoting Philip Chen (2021-01-07 15:42:08)
> > This patch adds a new property `function-row-physmap` to the
>
> From Documentation/process/submitting-patches.rst
>
> Describe your changes in imperative mood, e.g. "make xyzzy do frotz"
> instead of "[This patch] makes xyzzy do frotz" or "[I] changed xyzzy
> to do frotz", as if you are giving orders to the codebase to change
> its behaviour.
I was aware of this guideline, but I thought it only applies to the
summary line.
I'll apply the guideline to the whole description.
Thanks!
>
> > device tree for the custom keyboard top row design.
> >
> > The property describes the rows/columns of the top row keys
> > from left to right.
> >
> > Signed-off-by: Philip Chen <philipchen@chromium.org>
> > ---
> > diff --git a/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml b/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml
> > index 8e50c14a9d778..7acdb33781d30 100644
> > --- a/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml
> > +++ b/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml
> > @@ -31,6 +31,16 @@ properties:
> >        if the EC does not have its own logic or hardware for this.
> >      type: boolean
> >
> > +  function-row-physmap:
>
> Is there any minimum/maximum number of elements possible?
The maximum is 15.
There is no definition for the minimum - we can probably say the minimum is 1.
>
> > +    $ref: '/schemas/types.yaml#/definitions/uint32-array'
> > +    description: |
> > +      An ordered u32 array describing the rows/columns (in the scan matrix)
> > +      of top row keys from physical left (KEY_F1) to right. Each entry
> > +      encodes the row/column as:
> > +      (((row) & 0xFF) << 24) | (((column) & 0xFF) << 16)
> > +      where the lower 16 bits are reserved. This property is specified only
> > +      when the keyboard has a custom design for the top row keys.
> > +