Hi Andrew, Thank you for explanation. Best regards, Wells Lu > > Hi Andrew, > > > > Thank you for explanation. > > > > I'll add phy_support_asym_pause() after PHY connected next patch. > > > > I found some drivers call phy_set_max_speed() to set PHY speed to 100M > > after PHY connected. Is that necessary? > > > From 'supported', PHY supports 10M/100M already. > > You need phy_set_max_speed() when it is possible to connect a 10/100 MAC to a 1G PHY. You > sometime do this because a 1G PHY is cheaper than a 100M PHY. Unless limited, the PHY will > advertise and could negotiate a 1G link, but the MAC could then not support it. If it is > not physically possible to connect a 1G PHY to your MAC, you don't need to worry. > > > I also found some drivers call phy_start_aneg() after PHY started. > > It is not needed. > > Andrew