diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index bf26cd0abf6dd9..af339dfd29f805 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -1806,7 +1806,7 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.num_vlans = 4096,
 		.num_alus = 1024,
 		.num_statics = 256,
-		.cpu_ports = 0x30,	/* can be configured as cpu port */
+		.cpu_ports = 0x38,	/* can be configured as cpu port */
 		.port_cnt = 8,		/* total physical port count */
 		.port_nirqs = 6,
 		.num_tx_queues = 8,
diff --git a/drivers/net/dsa/microchip/lan937x_main.c b/drivers/net/dsa/microchip/lan937x_main.c
index 7fe127a075de31..29780d7075fad3 100644
--- a/drivers/net/dsa/microchip/lan937x_main.c
+++ b/drivers/net/dsa/microchip/lan937x_main.c
@@ -219,6 +219,8 @@ void lan937x_config_cpu_port(struct dsa_switch *ds)
 
 			/* enable cpu port */
 			lan937x_port_setup(dev, dp->index, true);
+		} else {
+			dev_warn(ds->dev, "port %d cannot be used as cpu port on this device.\n", dp->index);
 		}
 	}