Hi Arnd, Thank you for your reply. > > @@ -351,6 +352,10 @@ static void ftgmac100_start_hw(struct ftgmac100 > *priv) > > if (priv->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) > > maccr |= FTGMAC100_MACCR_RM_VLAN; > > > > + if (of_device_is_compatible(priv->dev->of_node, > > +"aspeed,ast2700-mac") > > && > > + phydev && phydev->interface == PHY_INTERFACE_MODE_RMII) > > + maccr |= FTGMAC100_MACCR_RMII_ENABLE; > > + > > /* Hit the HW */ > > Is there a way to probe the presence of 64-bit addressing from hardware > registers? That would be nicer than triggering it from the compatible string, > given that any future SoC is likely also 64-bit. There is no register indicated about 64-bit address support in the ftgmac100 of Aspeed 7th generation. Therefore, we use the compatible to configure pin strap and DMA mask. Thanks, Jacky
