netdev - Re: [PATCH net-next RFC v2 0/6] net: phy: Introduce a port representation

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Message-ID: <20250123113121.1d151582@kmaincent-XPS-13-7390>
Date: Thu, 23 Jan 2025 11:31:21 +0100
From: Kory Maincent <kory.maincent@...tlin.com>
To: Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc: davem@...emloft.net, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 thomas.petazzoni@...tlin.com, Andrew Lunn <andrew@...n.ch>, 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>, 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>, Rob Herring
 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>
Subject: Re: [PATCH net-next RFC v2 0/6] net: phy: Introduce a port
 representation

On Wed, 22 Jan 2025 18:42:45 +0100
Maxime Chevallier <maxime.chevallier@...tlin.com> wrote:

> Hello everyone,
> 
> This is a second RFC for the introduction of a front-facing interfaces
> for ethernet devices.
> 
> The firts RFC[1] already got some reviews, focusing on the DT part of
> that work. To better lay the ground for further discussions, this second
> round includes a binding :)
> 
> Oleksij suggested some further possibilities for improving this binding,
> as we could consider describing connectors in great details for
> crossover detection, PoE ping mappings, etc. However, as this is
> preliminary work, the included binding is still quite simple but can
> certainly be extended.
> 
> This RFC V2 doesn't bring much compared to V1 :
>  - A binding was introduced
>  - A warning has been fixed in the dp83822 patch
>  - The "lanes" property has been made optional

Small question, I know you want to begin with something simple but would it be
possible to consider how to support the port representation in NIT and
switch drivers? Maybe it is out of your scope but it would be nice if you
consider how NIT and switches can support it in your development.

Regards,
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com