linux-kernel - Re: [PATCH net-next v16 01/15] dt-bindings: net: Introduce the ethernet-connector description

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Message-ID: <bcb0b086-48f3-435e-9907-d7f34be1fbbe@lunn.ch>
Date: Thu, 13 Nov 2025 14:11:54 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc: davem@...emloft.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	thomas.petazzoni@...tlin.com, Jakub Kicinski <kuba@...nel.org>,
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
	Russell King <linux@...linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Herve Codina <herve.codina@...tlin.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Vladimir Oltean <vladimir.oltean@....com>,
	Köry Maincent <kory.maincent@...tlin.com>,
	Marek Behún <kabel@...nel.org>,
	Oleksij Rempel <o.rempel@...gutronix.de>,
	Nicolò Veronese <nicveronese@...il.com>,
	Simon Horman <horms@...nel.org>, mwojtas@...omium.org,
	Antoine Tenart <atenart@...nel.org>, devicetree@...r.kernel.org,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Romain Gantois <romain.gantois@...tlin.com>,
	Daniel Golle <daniel@...rotopia.org>,
	Dimitri Fedrau <dimitri.fedrau@...bherr.com>
Subject: Re: [PATCH net-next v16 01/15] dt-bindings: net: Introduce the
 ethernet-connector description

On Thu, Nov 13, 2025 at 09:14:03AM +0100, Maxime Chevallier wrote:
> The ability to describe the physical ports of Ethernet devices is useful
> to describe multi-port devices, as well as to remove any ambiguity with
> regard to the nature of the port.
> 
> Moreover, describing ports allows for a better description of features
> that are tied to connectors, such as PoE through the PSE-PD devices.
> 
> Introduce a binding to allow describing the ports, for now with 2
> attributes :
> 
>  - The number of pairs, which is a quite generic property that allows
>    differentating between multiple similar technologies such as BaseT1
>    and "regular" BaseT (which usually means BaseT4).
> 
>  - The media that can be used on that port, such as BaseT for Twisted
>    Copper, BaseC for coax copper, BaseS/L for Fiber, BaseK for backplane
>    ethernet, etc. This allows defining the nature of the port, and
>    therefore avoids the need for vendor-specific properties such as
>    "micrel,fiber-mode" or "ti,fiber-mode".
> 
> The port description lives in its own file, as it is intended in the
> future to allow describing the ports for phy-less devices.
> 
> Signed-off-by: Maxime Chevallier <maxime.chevallier@...tlin.com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew