On Wed, 13 Jan 2021 10:28:49 +0000 Russell King - ARM Linux admin <li...@armlinux.org.uk> wrote:
> I don't know whether the 88x3310 on the host side uses AN or not for > 2500base-X - that detail isn't mentioned in the datasheet, and I don't > have a setup that I could test that with. It does not. I have been poking the registers on 88x3310, and also on Peridot and Amethyst SERDES PHYs when cmode on the switch is set to 2500base-x, and by default the inband AN is disabled. Enabling it on the PHY in Amethyst does not work at all. On Peridot your code in mv88e6xxx enables it, but when 88x3310 is connected to Peridot SERDES, it does not work until the AN is disabled on Peridot. Enabling the AN on 2500base-x mode on 88x3310 does not seem to work. I will do some more tests by poking the registers and report this. Marek
