linux-kernel - Re: [PATCH v4 2/6] dt-bindings: net: dsa: mediatek,mt7530: fix reset lines

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Message-ID: <cf10e888-7fe2-7cf8-091a-40207eeb78b5@linaro.org>
Date:   Tue, 23 Aug 2022 13:44:27 +0300
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        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>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        Luiz Angelo Daros de Luca <luizluca@...il.com>,
        Sander Vanheule <sander@...nheule.net>,
        René van Dorst <opensource@...rst.com>,
        Daniel Golle <daniel@...rotopia.org>, erkin.bozoglu@...ont.com,
        Sergio Paracuellos <sergio.paracuellos@...il.com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/6] dt-bindings: net: dsa: mediatek,mt7530: fix reset
 lines

On 20/08/2022 11:07, Arınç ÜNAL wrote:
> - Fix description of mediatek,mcm. mediatek,mcm is not used on MT7623NI.

Separate commit. You are still doing here few things at a time.

> - Add description for reset-gpios.
> - Invalidate reset-gpios if mediatek,mcm is used. We cannot use multiple
> reset lines at the same time.
> - Invalidate mediatek,mcm if the compatible device is mediatek,mt7531.
> There is no multi-chip module version of mediatek,mt7531.
> - Require mediatek,mcm for mediatek,mt7621 as the compatible string is only
> used for the multi-chip module version of MT7530.
> 
> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
> ---
>  .../bindings/net/dsa/mediatek,mt7530.yaml     | 31 +++++++++++++++++--
>  1 file changed, 28 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> index edf48e917173..4c99266ce82a 100644
> --- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> +++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
> @@ -110,11 +110,15 @@ properties:
>    mediatek,mcm:
>      type: boolean
>      description:
> -      if defined, indicates that either MT7530 is the part on multi-chip
> -      module belong to MT7623A has or the remotely standalone chip as the
> -      function MT7623N reference board provided for.
> +      Used for MT7621AT, MT7621DAT, MT7621ST and MT7623AI SoCs which the MT7530
> +      switch is a part of the multi-chip module.
>  
>    reset-gpios:
> +    description:
> +      GPIO to reset the switch. Use this if mediatek,mcm is not used.
> +      This property is optional because some boards share the reset line with
> +      other components which makes it impossible to probe the switch if the
> +      reset line is used.
>      maxItems: 1
>  
>    reset-names:
> @@ -165,6 +169,9 @@ allOf:
>        required:
>          - mediatek,mcm
>      then:
> +      properties:
> +        reset-gpios: false
> +
>        required:
>          - resets
>          - reset-names
> @@ -182,6 +189,24 @@ allOf:
>          - core-supply
>          - io-supply
>  
> +  - if:
> +      properties:
> +        compatible:
> +          items:

Again, not items. This can be just const or enum.

> +            - const: mediatek,mt7531
> +    then:
> +      properties:
> +        mediatek,mcm: false
> +
> +  - if:
> +      properties:
> +        compatible:
> +          items:

Ditto.

> +            - const: mediatek,mt7621
> +    then:
> +      required:
> +        - mediatek,mcm
> +
>  unevaluatedProperties: false
>  
>  examples:


Best regards,
Krzysztof