Thread (31 messages) 31 messages, 5 authors, 2025-11-19

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

From: Andrew Lunn <andrew@lunn.ch>
Date: 2025-11-13 13:12:08
Also in: linux-arm-kernel, linux-arm-msm, linux-devicetree, lkml

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@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew
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