On Fri, Jul 26, 2019 at 03:16:04PM +0200, Andrew Lunn wrote: > Are you sure it is using SGMII and not 2500BaseX? Can you get access > to the signalling word? SGMII is supposed to indicate to the MAC what > speed it is using, via inband signalling. So there should not be any > need for a fixed-link. 2500BaseX however does not have such > signalling, so there would need to be a fixed link. > > Maybe we should really consider what phy-mode = "sgmii"; means. Should > this include the overclocked 2.5G speed, or should we add a 2500sgmii > link mode?
Note that Documentation/networking/phy.rst now contains definitions for SGMII, 1000BASE-X and 2500BASE-X. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up
