linux-kernel - Re: [PATCH net-next 15/16] dt-bindings: net: dwmac: Simplify MTL queue props dependencies

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Message-ID: <20230317205604.GA2723387-robh@kernel.org>
Date:   Fri, 17 Mar 2023 15:56:04 -0500
From:   Rob Herring <robh@...nel.org>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Christian Marangi <ansuelsmth@...il.com>,
        Richard Cochran <richardcochran@...il.com>,
        Biao Huang <biao.huang@...iatek.com>,
        Yang Yingliang <yangyingliang@...wei.com>,
        devicetree@...r.kernel.org, netdev@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 15/16] dt-bindings: net: dwmac: Simplify MTL
 queue props dependencies

On Tue, Mar 14, 2023 at 01:51:02AM +0300, Serge Semin wrote:
> Currently the Tx/Rx queues properties interdependencies are described by
> means of the pattern: "if: required: X, then: properties: Y: false, Z:
> false, etc". Due to very unfortunate MTL Tx/Rx queue DT-node design the
> resultant sub-nodes schemas look very bulky and thus hard to read. The
> situation can be improved by using the "allOf:/oneOf: required: X,
> required: Y, etc" pattern instead thus getting shorter and a bit easier to
> comprehend constructions.
> 
> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> 
> ---

Reviewed-by: Rob Herring <robh@...nel.org>

> 
> Note the solution can be shortened out a bit further by replacing the
> single-entry allOf statements with just the "not: required: etc" pattern.
> But in order to do that the DT-schema validation tool must be fixed like
> this:
> 
> --- a/meta-schemas/nodes.yaml	2021-02-08 14:20:56.732447780 +0300
> +++ b/meta-schemas/nodes.yaml	2021-02-08 14:21:00.736492245 +0300
> @@ -22,6 +22,7 @@
>      - unevaluatedProperties
>      - deprecated
>      - required
> +    - not
>      - allOf
>      - anyOf
>      - oneOf

This should be added regardless. Can you send a patch to devicetree-spec 
or a GH PR. But I'd skip using that here for now because then we require 
a new version of dtschema.

Rob