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Message-ID: <20231013141550.GA3793553-robh@kernel.org>
Date:   Fri, 13 Oct 2023 09:15:50 -0500
From:   Rob Herring <robh@...nel.org>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Christian Marangi <ansuelsmth@...il.com>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 3/3] RFC: net: dsa: mv88e6xxx: Register mdio-external

On Fri, Oct 13, 2023 at 12:35:16AM +0200, Linus Walleij wrote:
> Make it legal to have a subnode just named "mdio-external"
> and have that be recognized immediately as the external
> MDIO bus, register it and return. Only fallback to the
> old method with a compatible in the external bus node
> if this doesn't work.
> 
> This is the result of deprecating the old DT method
> of providing a node "mdio1" with a compatible string.

I think this is the wrong direction. Using compatible is much better 
than relying on node names. We've been "fixing" node names precisely 
because they are usually not ABI.

Rob

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