On Mon, Oct 19, 2020 at 11:06:54PM +0200, Andrew Lunn wrote: > On Mon, Oct 19, 2020 at 02:49:13PM -0600, Robert Hancock wrote: > > The Finisar FCLF8520P2BTL 1000BaseT SFP module uses a Marvel 81E1111 PHY > > with a modified PHY ID, and by default does not have 1000BaseX > > auto-negotiation enabled, which is not generally desirable with Linux > > networking drivers. > > I could be wrong, but i thought phylink used SGMII with copper SFPs, > so that 10/100 works as well as 1G. So why is 1000BaseX an issue? > Do you have a MAC which cannot do SGMII, only 1000BaseX?
Indeed it does. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
