netdev - Re: [PATCH 3/7] dt-bindings: net: dsa: mediatek,mt7530: add port bindings for MT7988

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Date:   Thu, 6 Apr 2023 21:07:46 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     arinc9.unal@...il.com, Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Daniel Golle <daniel@...rotopia.org>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Sean Wang <sean.wang@...iatek.com>
Cc:     Arınç ÜNAL <arinc.unal@...nc9.com>,
        erkin.bozoglu@...ont.com, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH 3/7] dt-bindings: net: dsa: mediatek,mt7530: add port
 bindings for MT7988

On 06/04/2023 10:01, arinc9.unal@...il.com wrote:
> From: Arınç ÜNAL <arinc.unal@...nc9.com>
> 
> The switch on MT7988 has got only port 6 as a CPU port. The only phy-mode
> to be used is internal. Add this.
> 
> Some bindings are incorrect for this switch now, so move them to more
> specific places.
> 
> Address the incorrect information of which ports can be used as a user
> port. Any port can be used as a user port.
> 
> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
> ---
>  .../bindings/net/dsa/mediatek,mt7530.yaml     | 63 ++++++++++++++-----
>  1 file changed, 46 insertions(+), 17 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> index 7045a98d9593..605888ce2bc6 100644
> --- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> +++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> @@ -160,22 +160,6 @@ patternProperties:
>        "^(ethernet-)?port@[0-9]+$":
>          type: object
>  
> -        properties:
> -          reg:
> -            description:
> -              Port address described must be 5 or 6 for CPU port and from 0 to 5
> -              for user ports.
> -
> -        allOf:
> -          - if:
> -              required: [ ethernet ]
> -            then:
> -              properties:
> -                reg:
> -                  enum:
> -                    - 5
> -                    - 6
> -

I have doubts that the binding is still maintainable/reviewable. First,
why do you need all above patterns after removal of entire contents?

Second, amount of if-then-if-then located in existing blocks (not
top-level) is quite big. I counted if-then-using defs, where defs has
patternProps-patternProps-if-then-if-then-properties.... OMG. :)

Best regards,
Krzysztof