diff --git a/drivers/net/dsa/b53/b53_serdes.c b/drivers/net/dsa/b53/b53_serdes.c
index 0690210770ff..b0ccebcd3ffa 100644
--- a/drivers/net/dsa/b53/b53_serdes.c
+++ b/drivers/net/dsa/b53/b53_serdes.c
@@ -65,7 +65,7 @@ static u16 b53_serdes_read(struct b53_device *dev, u8 lane,
 	return b53_serdes_read_blk(dev, offset, block);
 }
 
-static int b53_serdes_config(struct phylink_pcs *pcs, unsigned int mode,
+static int b53_serdes_config(struct phylink_pcs *pcs, unsigned int neg_mode,
 			     phy_interface_t interface,
 			     const unsigned long *advertising,
 			     bool permit_pause_to_mac)
@@ -239,6 +239,7 @@ int b53_serdes_init(struct b53_device *dev, int port)
 	pcs->dev = dev;
 	pcs->lane = lane;
 	pcs->pcs.ops = &b53_pcs_ops;
+	pcs->pcs.neg_mode = true;
 
 	return 0;
 }