linux-kernel - Re: [RFC net-next PATCH 00/13] Add PCS core support

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Message-ID: <20250407182738.498d96b0@kmaincent-XPS-13-7390>
Date: Mon, 7 Apr 2025 18:27:38 +0200
From: Kory Maincent <kory.maincent@...tlin.com>
To: Sean Anderson <sean.anderson@...ux.dev>
Cc: netdev@...r.kernel.org, Andrew Lunn <andrew+netdev@...n.ch>, "David S .
 Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub
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 <linux@...linux.org.uk>, linux-kernel@...r.kernel.org, Christian Marangi
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Subject: Re: [RFC net-next PATCH 00/13] Add PCS core support

On Thu,  3 Apr 2025 14:18:54 -0400
Sean Anderson <sean.anderson@...ux.dev> wrote:

> This series adds support for creating PCSs as devices on a bus with a
> driver (patch 3). As initial users,
> 
> - The Lynx PCS (and all of its users) is converted to this system (patch 5)
> - The Xilinx PCS is broken out from the AXI Ethernet driver (patches 6-8)
> - The Cadence MACB driver is converted to support external PCSs (namely
>   the Xilinx PCS) (patches 9-10).
> 
> The last few patches add device links for pcs-handle to improve boot times,
> and add compatibles for all Lynx PCSs.
> 
> Care has been taken to ensure backwards-compatibility. The main source
> of this is that many PCS devices lack compatibles and get detected as
> PHYs. To address this, pcs_get_by_fwnode_compat allows drivers to edit
> the devicetree to add appropriate compatibles.

I don't dive into your patch series and I don't know if you have heard about it
but Christian Marangi is currently working on fwnode for PCS:
https://lore.kernel.org/netdev/20250406221423.9723-1-ansuelsmth@gmail.com

Maybe you should sync with him!

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