netdev - Re: [PATCH net-next 11/14] net: stmmac: do not require snps,ps-speed for SGMII

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Message-ID: <15ea57e0-d127-4722-b752-4989d5a443c0@lunn.ch>
Date: Wed, 15 Oct 2025 23:26:03 +0200
From: Andrew Lunn <andrew@...n.ch>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Cc: Heiner Kallweit <hkallweit1@...il.com>,
	Abhishek Chauhan <quic_abchauha@...cinc.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Alexis Lothore <alexis.lothore@...tlin.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	Boon Khai Ng <boon.khai.ng@...era.com>,
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	"David S. Miller" <davem@...emloft.net>,
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	Vladimir Oltean <olteanv@...il.com>,
	Vladimir Oltean <vladimir.oltean@....com>,
	Yu-Chun Lin <eleanor15x@...il.com>
Subject: Re: [PATCH net-next 11/14] net: stmmac: do not require snps,ps-speed
 for SGMII

On Wed, Oct 15, 2025 at 03:20:53PM +0100, Russell King (Oracle) wrote:
> SGMII mode does not require port-speed to be specified; this only
> switches SGMII to use the MAC configuration register speed settings
> and the actual value is irrelevant when the link comes up.
> 
> As it seems the intention was to support "reverse SGMII" with this
> setting, but the code didn't actually configure that due to a typo,
> the warning and bad DT binding documentation has led people to
> specify snps,ps-speed in their DT files inappropriately.

I know you hit the patch limit. Do you have a patch in the next series
which updates the binding?

      Andrew