netdev - Re: [PATCH v1 net-next 3/7] dt-bindings: net: dsa: qca8k: utilize shared dsa.yaml

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Date:   Tue, 25 Oct 2022 16:21:14 -0500
From:   Rob Herring <robh@...nel.org>
To:     Colin Foster <colin.foster@...advantage.com>
Cc:     linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        nç ÜNAL <arinc.unal@...nc9.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Vladimir Oltean <olteanv@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Lee Jones <lee@...nel.org>
Subject: Re: [PATCH v1 net-next 3/7] dt-bindings: net: dsa: qca8k: utilize
 shared dsa.yaml

On Mon, Oct 24, 2022 at 10:03:51PM -0700, Colin Foster wrote:
> The dsa.yaml binding contains duplicated bindings for address and size
> cells, as well as the reference to dsa-port.yaml. Instead of duplicating
> this information, remove the reference to dsa-port.yaml and include the
> full reference to dsa.yaml.

I don't think this works without further restructuring. Essentially, 
'unevaluatedProperties' on works on a single level. So every level has 
to define all properties at that level either directly in 
properties/patternProperties or within a $ref.

See how graph.yaml is structured and referenced for an example how this 
has to work.

> 
> Signed-off-by: Colin Foster <colin.foster@...advantage.com>
> Suggested-by: Vladimir Oltean <olteanv@...il.com>
> ---
>  .../devicetree/bindings/net/dsa/qca8k.yaml         | 14 +++-----------
>  1 file changed, 3 insertions(+), 11 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/dsa/qca8k.yaml b/Documentation/devicetree/bindings/net/dsa/qca8k.yaml
> index 978162df51f7..7884f68cab73 100644
> --- a/Documentation/devicetree/bindings/net/dsa/qca8k.yaml
> +++ b/Documentation/devicetree/bindings/net/dsa/qca8k.yaml
> @@ -66,22 +66,16 @@ properties:
>                   With the legacy mapping the reg corresponding to the internal
>                   mdio is the switch reg with an offset of -1.
>  
> +$ref: "dsa.yaml#"
> +
>  patternProperties:
>    "^(ethernet-)?ports$":
>      type: object
> -    properties:
> -      '#address-cells':
> -        const: 1
> -      '#size-cells':
> -        const: 0
> -
>      patternProperties:
>        "^(ethernet-)?port@[0-6]$":
>          type: object
>          description: Ethernet switch ports
>  
> -        $ref: dsa-port.yaml#
> -
>          properties:
>            qca,sgmii-rxclk-falling-edge:
>              $ref: /schemas/types.yaml#/definitions/flag
> @@ -104,8 +98,6 @@ patternProperties:
>                SGMII on the QCA8337, it is advised to set this unless a communication
>                issue is observed.
>  
> -        unevaluatedProperties: false
> -

Dropping this means any undefined properties in port nodes won't be an 
error. Once I fix all the issues related to these missing, there will be 
a meta-schema checking for this (this could be one I fixed already).

>  oneOf:
>    - required:
>        - ports
> @@ -116,7 +108,7 @@ required:
>    - compatible
>    - reg
>  
> -additionalProperties: true

This should certainly be changed though. We should only have 'true' for 
incomplete collections of properties. IOW, for common bindings.

> +unevaluatedProperties: false
>  
>  examples:
>    - |
> -- 
> 2.25.1
> 
>