linux-kernel - Re: [PATCH v4 1/2] dt-bindings: input: cros-ec-keyb: Add a new property

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Date:   Mon, 11 Jan 2021 18:10:11 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     LKML <linux-kernel@...r.kernel.org>,
        Philip Chen <philipchen@...omium.org>,
        dmitry.torokhov@...il.com
Cc:     dianders@...omium.org, Philip Chen <philipchen@...omium.org>,
        Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>,
        Rob Herring <robh+dt@...nel.org>,
        Simon Glass <sjg@...omium.org>, devicetree@...r.kernel.org,
        linux-input@...r.kernel.org
Subject: Re: [PATCH v4 1/2] dt-bindings: input: cros-ec-keyb: Add a new property

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.

> 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@...omium.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?

> +    $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.
> +