On Wed, Jun 12, 2024 at 05:53:16PM +0800, Luo Jie wrote: > @@ -1865,7 +1872,8 @@ static int phylink_validate_phy(struct phylink *pl, struct phy_device *phy, > if (phy->is_c45 && state->rate_matching == RATE_MATCH_NONE && > state->interface != PHY_INTERFACE_MODE_RXAUI && > state->interface != PHY_INTERFACE_MODE_XAUI && > - state->interface != PHY_INTERFACE_MODE_USXGMII) > + state->interface != PHY_INTERFACE_MODE_USXGMII && > + state->interface != PHY_INTERFACE_MODE_10G_QXGMII) > state->interface = PHY_INTERFACE_MODE_NA; It would be better, rather than extending this workaround, instead to have the PHY driver set phy->possible_interfaces in its .config_init method. phy->possible_interfaces should be the set of interfaces that the PHY _will_ use given its configuration for the different media speeds. I think that means just PHY_INTERFACE_MODE_10G_QXGMII for your configuration. Thanks. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!