[PATCH net-next 0/3] net: stmmac: phylink PCS conversion part 3 (dodgy stuff)

Russell King (Oracle) linux at armlinux.org.uk
Thu Oct 30 08:22:12 PDT 2025


On Thu, Oct 30, 2025 at 03:19:27PM +0000, Russell King (Oracle) wrote:
> > 
> > This is probably fine since Bit(9) is self-clearing and its value just
> > after this is 0x00041000.
> 
> Yes, and bit 9 doesn't need to be set at all. SGMII isn't "negotiation"
> but the PHY says to the MAC "this is how I'm operating" and the MAC says
> "okay". Nothing more.
> 
> I'm afraid the presence of snps,ps-speed, this disrupts the test.

Note also that testing a 10M link, 100M, 1G and finally 100M again in
that order would also be interesting given my question about the RGMII
register changes that configure_sgmii does.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!



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