linux-kernel - Re: [PATCH v3 5/5] dt-bindings: arm: Add initial bindings for Nuvoton Platform

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Message-ID: <Ymc6hK0Z/t3IKF3z@robh.at.kernel.org>
Date:   Mon, 25 Apr 2022 19:19:16 -0500
From:   Rob Herring <robh@...nel.org>
To:     Jacky Huang <ychuang3@...oton.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        ychuang570808@...il.com, sboyd@...nel.org, krzk+dt@...nel.org,
        arnd@...db.de, olof@...om.net, will@...nel.org, soc@...nel.org,
        cfli0@...oton.com
Subject: Re: [PATCH v3 5/5] dt-bindings: arm: Add initial bindings for
 Nuvoton Platform

On Thu, Apr 21, 2022 at 04:13:20PM +0800, Jacky Huang wrote:
> 
> 
> On 2022/4/21 下午 04:05, Krzysztof Kozlowski wrote:
> > On 21/04/2022 10:04, Jacky Huang wrote:
> > > 
> > > On 2022/4/21 下午 02:56, Krzysztof Kozlowski wrote:
> > > > On 21/04/2022 08:39, Jacky Huang wrote:
> > > > > On 2022/4/18 下午 08:11, Krzysztof Kozlowski wrote:
> > > > > > On 18/04/2022 10:27, Jacky Huang wrote:
> > > > > > > +properties:
> > > > > > > +  $nodename:
> > > > > > > +    const: '/'
> > > > > > > +  compatible:
> > > > > > > +    items:
> > > > > > > +      - enum:
> > > > > > > +          - nuvoton,ma35d1
> > > > > > > +          - nuvoton,ma35d1-evb
> > > > > > > +          - nuvoton,ma35d1-iot
> > > > > > > +          - nuvoton,ma35d1-som512
> > > > > > > +          - nuvoton,ma35d1-som1g
> > > > > > This does not match your DTS and does not look reasonable (SoC
> > > > > > compatible should not be part of this enum). Check some other board
> > > > > > bindings for examples.
> > > > > > 
> > > > > > 
> > > > > > Best regards,
> > > > > > Krzysztof
> > > > > I would like to modify it as follows:
> > > > > 
> > > > > description: |
> > > > >      Boards with an ARMv8 based Nuvoton SoC shall have the following
> > > > >      properties.
> > > > > 
> > > > > properties:
> > > > >      $nodename:
> > > > >        const: '/'
> > > > >      compatible:
> > > > >        oneOf:
> > > > > 
> > > > >          - description: MA35D1 evaluation board
> > > > >            items:
> > > > >              - const: nuvoton,ma35d1-evb
> > > > >              - const: nuvoton,ma35d1
> > > > > 
> > > > >          - description: MA35D1 IoT board
> > > > >            items:
> > > > >              - const: nuvoton,ma35d1-iot
> > > > Instead just enum with all board compatibles.
> > > How about to modify it as the follows:
> > > 
> > >     compatible:
> > >       oneOf:
> > > 
> > >         - description: MA35D1 evaluation board
> > >           items:
> > >             - enum:
> > >                 - nuvoton,ma35d1-evb
> > >             - const: nuvoton,ma35d1
> > > 
> > >         - description: MA35D1 IoT board
> > >           items:
> > >             - enum:
> > >                 - nuvoton,ma35d1-iot
> > >             - const: nuvoton,ma35d1
> > > 
> > >         - description: MA35D1 SOM board
> > >           items:
> > >             - enum:
> > >                 - nuvoton,ma35d1-som512
> > >                 - nuvoton,ma35d1-som1g
> > >             - const: nuvoton,ma35d1
> > > 
> > It's still almost the same. All boards together. You can add a comment
> > next to the compatible if you want some user-friendly name.
> > 
> > 
> > Best regards,
> > Krzysztof
> 
> OK, I got it. Like this,
> 
>   compatible:
>     oneOf:
> 
>       - description: MA35D1 based boards
>         items:
>           - enum:
>               - nuvoton,ma35d1-evb
>               - nuvoton,ma35d1-iot

>               - nuvoton,ma35d1-som512
>               - nuvoton,ma35d1-som1g

The memory node distinguishes how much memory. Is the board different 
for the SoM? If not, combine these to 1.

>           - const: nuvoton,ma35d1
> 
> Sincerely,
> Jacky Huang
> 
> 
>