netdev - Re: [PATCH net-next] dt-bindings: net: dsa: make phylink bindings required for CPU/DSA ports

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Message-ID: <20220801092256.3e05c12e@kernel.org>
Date:   Mon, 1 Aug 2022 09:22:56 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Vladimir Oltean <vladimir.oltean@....com>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Christian Marangi <ansuelsmth@...il.com>,
        John Crispin <john@...ozen.org>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Mans Rullgard <mans@...sr.com>,
        Arun Ramadoss <arun.ramadoss@...rochip.com>,
        Woojung Huh <woojung.huh@...rochip.com>,
        UNGLinuxDriver@...rochip.com,
        Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        George McCollister <george.mccollister@...il.com>,
        DENG Qingfang <dqfext@...il.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Aleksander Jan Bajkowski <olek2@...pl>,
        Alvin Šipraga <alsi@...g-olufsen.dk>,
        Luiz Angelo Daros de Luca <luizluca@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Pawel Dembicki <paweldembicki@...il.com>,
        Clément Léger <clement.leger@...tlin.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Marek Behún <kabel@...nel.org>,
        Marcin Wojtas <mw@...ihalf.com>
Subject: Re: [PATCH net-next] dt-bindings: net: dsa: make phylink bindings
 required for CPU/DSA ports

On Sun, 31 Jul 2022 18:00:06 +0300 Vladimir Oltean wrote:
> It is desirable that new DSA drivers are written to expect that all
> their ports register with phylink, and not rely on the DSA core's
> workarounds to skip this process.
> 
> To that end, DSA is being changed to warn existing drivers when such DT
> blobs are in use:
> https://patchwork.kernel.org/project/netdevbpf/cover/20220729132119.1191227-1-vladimir.oltean@nxp.com/
> 
> Introduce another layer of validation in the DSA DT schema, and assert
> that CPU and DSA ports must have phylink-related properties present.
> 
> Suggested-by: Rob Herring <robh+dt@...nel.org>
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
> ---
> I've sent this patch separately because at least right now I don't have
> a reason to resend the other 4 patches linked above, and this has no
> dependency on those.

If I'm reading

https://lore.kernel.org/r/CAL_JsqKZ6cEny_xD8LUMQUR6AQ0q7JKZMmdP-9MUZxzzNxZ3JQ@mail.gmail.com/

correctly - the warnings are expected but there needs to be a change 
to properties, so CR? (FWIW I'd lean towards allowing it still, even
tho net-next got closed. Assuming v2 can get posted and acked today.)