diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index a4882e493cf42..f5c9d695408a3 100644
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -1008,6 +1008,7 @@ static const u32 felix_phy_match_table[PHY_INTERFACE_MODE_MAX] = {
 	[PHY_INTERFACE_MODE_SGMII] = OCELOT_PORT_MODE_SGMII,
 	[PHY_INTERFACE_MODE_QSGMII] = OCELOT_PORT_MODE_QSGMII,
 	[PHY_INTERFACE_MODE_USXGMII] = OCELOT_PORT_MODE_USXGMII,
+	[PHY_INTERFACE_MODE_1000BASEX] = OCELOT_PORT_MODE_1000BASEX,
 	[PHY_INTERFACE_MODE_2500BASEX] = OCELOT_PORT_MODE_2500BASEX,
 };
 
diff --git a/drivers/net/dsa/ocelot/felix.h b/drivers/net/dsa/ocelot/felix.h
index 39faf10279652..a5e570826773e 100644
--- a/drivers/net/dsa/ocelot/felix.h
+++ b/drivers/net/dsa/ocelot/felix.h
@@ -12,6 +12,7 @@
 #define OCELOT_PORT_MODE_QSGMII		BIT(2)
 #define OCELOT_PORT_MODE_2500BASEX	BIT(3)
 #define OCELOT_PORT_MODE_USXGMII	BIT(4)
+#define OCELOT_PORT_MODE_1000BASEX	BIT(5)
 
 /* Platform-specific information */
 struct felix_info {
diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 081871824eaf9..98caca4317d76 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -28,6 +28,7 @@
 
 #define VSC9959_PORT_MODE_SERDES	(OCELOT_PORT_MODE_SGMII | \
 					 OCELOT_PORT_MODE_QSGMII | \
+					 OCELOT_PORT_MODE_1000BASEX | \
 					 OCELOT_PORT_MODE_2500BASEX | \
 					 OCELOT_PORT_MODE_USXGMII)
 
@@ -973,6 +974,7 @@ static void vsc9959_phylink_validate(struct ocelot *ocelot, int port,
 	phylink_set(mask, 100baseT_Full);
 	phylink_set(mask, 1000baseT_Half);
 	phylink_set(mask, 1000baseT_Full);
+	phylink_set(mask, 1000baseX_Full);
 
 	if (state->interface == PHY_INTERFACE_MODE_INTERNAL ||
 	    state->interface == PHY_INTERFACE_MODE_2500BASEX ||
diff --git a/drivers/net/dsa/ocelot/seville_vsc9953.c b/drivers/net/dsa/ocelot/seville_vsc9953.c
index 48fd43a933645..ea06492113568 100644
--- a/drivers/net/dsa/ocelot/seville_vsc9953.c
+++ b/drivers/net/dsa/ocelot/seville_vsc9953.c
@@ -21,7 +21,8 @@
 #define VSC9953_VCAP_POLICER_BASE2		120
 #define VSC9953_VCAP_POLICER_MAX2		161
 
-#define VSC9953_PORT_MODE_SERDES		(OCELOT_PORT_MODE_SGMII | \
+#define VSC9953_PORT_MODE_SERDES		(OCELOT_PORT_MODE_1000BASEX | \
+						 OCELOT_PORT_MODE_SGMII | \
 						 OCELOT_PORT_MODE_QSGMII)
 
 static const u32 vsc9953_port_modes[VSC9953_NUM_PORTS] = {
@@ -947,6 +948,7 @@ static void vsc9953_phylink_validate(struct ocelot *ocelot, int port,
 	phylink_set(mask, 100baseT_Full);
 	phylink_set(mask, 100baseT_Half);
 	phylink_set(mask, 1000baseT_Full);
+	phylink_set(mask, 1000baseX_Full);
 
 	if (state->interface == PHY_INTERFACE_MODE_INTERNAL) {
 		phylink_set(mask, 2500baseT_Full);