diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 4b4701c69fe1..e044d9e8d016 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1504,7 +1504,7 @@ unsupported:
 		phylink_set(mask, 100baseT_Full);
 
 		if (state->interface != PHY_INTERFACE_MODE_MII) {
-			phylink_set(mask, 1000baseT_Half);
+			/* This switch only supports 1G full-duplex. */
 			phylink_set(mask, 1000baseT_Full);
 			if (port == 5)
 				phylink_set(mask, 1000baseX_Full);