linux-kernel - Re: [PATCH 2/3] dt-bindings: net: sun8i-emac: Fix snps,dwmac.yaml inheritance

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Message-ID: <99c3e666-ec26-07a0-be40-0177dd449d84@linaro.org>
Date:   Sat, 26 Nov 2022 15:48:33 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Andre Przywara <andre.przywara@....com>
Cc:     Samuel Holland <samuel@...lland.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...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>,
        LABBE Corentin <clabbe.montjoie@...il.com>,
        Maxime Ripard <mripard@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...ts.linux.dev, netdev@...r.kernel.org
Subject: Re: [PATCH 2/3] dt-bindings: net: sun8i-emac: Fix snps,dwmac.yaml
 inheritance

On 26/11/2022 15:28, Andre Przywara wrote:
> On Sat, 26 Nov 2022 14:26:25 +0100
> Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
> 
> Hi,
> 
>> On 25/11/2022 21:20, Samuel Holland wrote:
>>> The sun8i-emac binding extends snps,dwmac.yaml, and should accept all
>>> properties defined there, including "mdio", "resets", and "reset-names".
>>> However, validation currently fails for these properties because the  
>>
>> validation does not fail:
>> make dt_binding_check -> no problems
>>
>> Maybe you meant that DTS do not pass dtbs_check?
> 
> Yes, that's what he meant: If a board actually doesn't have Ethernet
> configured, dt-validate complains. I saw this before, but didn't find
> any solution.
> An example is: $ dt-validate ... sun50i-a64-pinephone-1.2.dtb
> arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone-1.2.dtb:
>   ethernet@...0000: Unevaluated properties are not allowed ('resets', 'reset-names', 'mdio' were unexpected)
>   From schema: Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
> 
> Why exactly is beyond me, but this patch removes this message.

I don't think this should be fixed like this. That's the problem of
dtschema (not ignoring fully disabled nodes) and such patch only moves
from one correct syntax to another correct syntax, which fixes dtschema
problem, but changes nothing here.

Best regards,
Krzysztof