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

[Andrew Lunn]

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.
> 
> If mac_port_sel_speed is zero, then don't complain that the speed
> is invalid, as this means we're using "normal" SGMII.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>

Reviewed-by: Andrew Lunn <andrew at lunn.ch>

    Andrew