linux-kernel - Re: [RFC v2] dt-bindings: net: dsa: convert binding for mediatek switches

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Message-ID: <6d45f060-85e6-f3ff-ef00-6c68a2ada7a1@linaro.org>
Date:   Thu, 5 May 2022 22:29:28 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Frank Wunderlich <linux@...web.de>,
        linux-mediatek@...ts.infradead.org
Cc:     Frank Wunderlich <frank-w@...lic-files.de>,
        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>,
        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>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Greg Ungerer <gerg@...nel.org>,
        René van Dorst <opensource@...rst.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Subject: Re: [RFC v2] dt-bindings: net: dsa: convert binding for mediatek
 switches

On 05/05/2022 17:00, Frank Wunderlich wrote:
> From: Frank Wunderlich <frank-w@...lic-files.de>
> 
> Convert txt binding to yaml binding for Mediatek switches.
> 
> Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>

Thank you for your patch. There is something to discuss/improve.

> +    const: 1
> +
> +  "#size-cells":
> +    const: 0
> +
> +  core-supply:
> +    description: |

Drop | everywhere where it is not needed (so in all places, AFAICT)

> +      Phandle to the regulator node necessary for the core power.
> +
> +  "#gpio-cells":
> +    description: |
> +      Must be 2 if gpio-controller is defined.

Skip description, it's obvious from the GPIO controller schema.

> +    const: 2
> +
> +  gpio-controller:
> +    type: boolean
> +    description: |
> +      if defined, MT7530's LED controller will run on GPIO mode.
> +
> +  "#interrupt-cells":
> +    const: 1
> +
> +  interrupt-controller:
> +    type: boolean
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  io-supply:
> +    description: |
> +      Phandle to the regulator node necessary for the I/O power.
> +      See Documentation/devicetree/bindings/regulator/mt6323-regulator.txt
> +      for details for the regulator setup on these boards.
> +
> +  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.
> +
> +  reset-gpios:
> +    description: |
> +      Should be a gpio specifier for a reset line.

Skip description.

> +    maxItems: 1
> +
> +  reset-names:
> +    description: |
> +      Should be set to "mcm".

Skip description.

> +    const: mcm
> +
> +  resets:
> +    description: |
> +      Phandle pointing to the system reset controller with line index for
> +      the ethsys.
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +allOf:
> +  - $ref: "dsa.yaml#"
> +  - if:
> +      required:
> +        - mediatek,mcm
> +    then:
> +      required:
> +        - resets
> +        - reset-names
> +    else:
> +      required:
> +        - reset-gpios
> +
> +  - if:
> +      required:
> +        - interrupt-controller
> +    then:
> +      required:
> +        - interrupts
> +
> +  - if:
> +      properties:
> +        compatible:
> +          items:
> +            - const: mediatek,mt7530
> +    then:
> +      required:
> +        - core-supply
> +        - io-supply
> +
> +
> +patternProperties:

patternProperties go before allOf, just after regular properties.

> +  "^(ethernet-)?ports$":
> +    type: object

Also on this level:
    unevaluatedProperties: false

> +
> +    patternProperties:
> +      "^(ethernet-)?port@[0-9]+$":
> +        type: object
> +        description: Ethernet switch ports
> +
> +        properties:
> +          reg:
> +            description: |
> +              Port address described must be 6 for CPU port and from 0 to 5 for user ports.

This looks like not wrapped @80 character.

> +
> +        unevaluatedProperties: false
> +
> +        allOf:
> +          - $ref: dsa-port.yaml#
> +          - if:
> +              properties:
> +                label:
> +                  items:
> +                    - const: cpu
> +            then:
> +              required:
> +                - reg
> +                - phy-mode
> +
> +unevaluatedProperties: false




Best regards,
Krzysztof