linux-kernel - Re: [PATCH v3 1/2] dt-bindings: google,cros-ec-keyb: Introduce switches only compatible

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Date:   Tue, 3 May 2022 15:00:33 -0400
From:   Stephen Boyd <swboyd@...omium.org>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     linux-kernel@...r.kernel.org, patches@...ts.linux.dev,
        chrome-platform@...ts.linux.dev,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        "Joseph S. Barrera III" <joebar@...omium.org>
Subject: Re: [PATCH v3 1/2] dt-bindings: google,cros-ec-keyb: Introduce
 switches only compatible

Quoting Krzysztof Kozlowski (2022-05-03 08:42:39)
> On 03/05/2022 06:22, Stephen Boyd wrote:
> > If the ChromeOS board is a detachable, this cros-ec-keyb device won't
> > have a matrix keyboard but it may have some button switches, e.g. volume
> > buttons and power buttons. The driver still registers a keyboard though
> > and that leads to userspace confusion around where the keyboard is.
>
> (...)
>
> >
> > +if:
> > +  properties:
> > +    compatible:
> > +      contains:
> > +        const: google,cros-ec-keyb
> > +then:
> > +  allOf:
> > +    - $ref: "/schemas/input/matrix-keymap.yaml#"
> > +  required:
> > +    - keypad,num-rows
> > +    - keypad,num-columns
> > +    - linux,keymap
>
> else:
>   properties:
>     function-row-phsymap: false
>     google,needs-ghost-filter: false
>
> Because these are not valid for the non-matrix-keyboard case, right?
>

Yes, but they also depend on linux,keymap so they're not possible to
set because the matrix-keymap.yaml schema defines linux,keymap and that
is only included if google,cros-ec-keyb is present.