--- zzzz-none-000/linux-4.9.279/drivers/net/ethernet/amd/xgbe/xgbe-main.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/drivers/net/ethernet/amd/xgbe/xgbe-main.c	2023-02-08 11:43:42.000000000 +0000
@@ -738,6 +738,8 @@
 	pdata->netdev_features = netdev->features;
 
 	netdev->priv_flags |= IFF_UNICAST_FLT;
+	netdev->min_mtu = 0;
+	netdev->max_mtu = XGMAC_JUMBO_PACKET_MTU;
 
 	/* Use default watchdog timeout */
 	netdev->watchdog_timeo = 0;