[board_X540]            = &ixgbe_X540_info,
        [board_X550]            = &ixgbe_X550_info,
        [board_X550EM_x]        = &ixgbe_X550EM_x_info,
+       [board_x550em_x_fw]     = &ixgbe_x550em_x_fw_info,
        [board_x550em_a]        = &ixgbe_x550em_a_info,
        [board_x550em_a_fw]     = &ixgbe_x550em_a_fw_info,
 };
        {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x},
        {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x},
        {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_SFP), board_X550EM_x},
+       {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_1G_T), board_x550em_x_fw},
        {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR), board_x550em_a },
        {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR_L), board_x550em_a },
        {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP_N), board_x550em_a },
 
        return 0;
 }
 
+static s32 ixgbe_get_invariants_X550_x_fw(struct ixgbe_hw *hw)
+{
+       struct ixgbe_phy_info *phy = &hw->phy;
+
+       /* Start with X540 invariants, since so similar */
+       ixgbe_get_invariants_X540(hw);
+
+       phy->ops.set_phy_power = NULL;
+
+       return 0;
+}
+
 static s32 ixgbe_get_invariants_X550_a(struct ixgbe_hw *hw)
 {
        struct ixgbe_mac_info *mac = &hw->mac;
                else
                        hw->phy.phy_semaphore_mask = IXGBE_GSSR_PHY0_SM;
                /* Fallthrough */
-       case IXGBE_DEV_ID_X550EM_X_1G_T:
        case IXGBE_DEV_ID_X550EM_X_10G_T:
                return ixgbe_identify_phy_generic(hw);
+       case IXGBE_DEV_ID_X550EM_X_1G_T:
+               hw->phy.type = ixgbe_phy_ext_1g_t;
+               break;
        case IXGBE_DEV_ID_X550EM_A_1G_T:
        case IXGBE_DEV_ID_X550EM_A_1G_T_L:
                hw->phy.type = ixgbe_phy_fw;
                                        ixgbe_set_soft_rate_select_speed;
                break;
        case ixgbe_media_type_copper:
+               if (hw->device_id == IXGBE_DEV_ID_X550EM_X_1G_T)
+                       break;
                mac->ops.setup_link = ixgbe_setup_mac_link_t_X550em;
                mac->ops.setup_fc = ixgbe_setup_fc_generic;
                mac->ops.check_link = ixgbe_check_link_t_X550em;
                        *speed = IXGBE_LINK_SPEED_1GB_FULL |
                                 IXGBE_LINK_SPEED_10GB_FULL;
                        break;
+               case ixgbe_phy_ext_1g_t:
                case ixgbe_phy_sgmii:
                        *speed = IXGBE_LINK_SPEED_1GB_FULL;
                        break;
                phy->ops.setup_link = ixgbe_setup_fw_link;
                phy->ops.reset = ixgbe_reset_phy_fw;
                break;
+       case ixgbe_phy_ext_1g_t:
+               phy->ops.setup_link = NULL;
+               phy->ops.read_reg = NULL;
+               phy->ops.write_reg = NULL;
+               break;
        default:
                break;
        }
        .write_reg              = &ixgbe_write_phy_reg_generic,
 };
 
+static const struct ixgbe_phy_operations phy_ops_x550em_x_fw = {
+       X550_COMMON_PHY
+       .check_overtemp         = NULL,
+       .init                   = ixgbe_init_phy_ops_X550em,
+       .identify               = ixgbe_identify_phy_x550em,
+       .read_reg               = NULL,
+       .write_reg              = NULL,
+       .read_reg_mdi           = NULL,
+       .write_reg_mdi          = NULL,
+};
+
 static const struct ixgbe_phy_operations phy_ops_x550em_a = {
        X550_COMMON_PHY
        .check_overtemp         = &ixgbe_tn_check_overtemp,
        .link_ops               = &link_ops_x550em_x,
 };
 
+const struct ixgbe_info ixgbe_x550em_x_fw_info = {
+       .mac                    = ixgbe_mac_X550EM_x,
+       .get_invariants         = ixgbe_get_invariants_X550_x_fw,
+       .mac_ops                = &mac_ops_X550EM_x,
+       .eeprom_ops             = &eeprom_ops_X550EM_x,
+       .phy_ops                = &phy_ops_x550em_x_fw,
+       .mbx_ops                = &mbx_ops_generic,
+       .mvals                  = ixgbe_mvals_X550EM_x,
+};
+
 const struct ixgbe_info ixgbe_x550em_a_info = {
        .mac                    = ixgbe_mac_x550em_a,
        .get_invariants         = &ixgbe_get_invariants_X550_a,