3 files changed, 17 insertions, 3 deletions
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
index 674d77e1b029..4573b6ed2c4f 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -2,7 +2,7 @@
 /*
  * Microchip KSZ9477 switch driver main logic
  *
- * Copyright (C) 2017-2018 Microchip Technology Inc.
+ * Copyright (C) 2017-2019 Microchip Technology Inc.
  */
 
 #include <linux/delay.h>
@@ -966,6 +966,16 @@ static void ksz9477_port_mirror_del(struct dsa_switch *ds, int port,
 			     PORT_MIRROR_SNIFFER, false);
 }
 
+static void ksz9477_phy_setup(struct ksz_device *dev, int port,
+			      struct phy_device *phy)
+{
+	if (port < dev->phy_port_cnt) {
+		/* The MAC actually cannot run in 1000 half-duplex mode. */
+		phy_remove_link_mode(phy,
+				     ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
+	}
+}
+
 static void ksz9477_port_setup(struct ksz_device *dev, int port, bool cpu_port)
 {
 	u8 data8;
@@ -1299,6 +1309,7 @@ static const struct ksz_dev_ops ksz9477_dev_ops = {
 	.get_port_addr = ksz9477_get_port_addr,
 	.cfg_port_member = ksz9477_cfg_port_member,
 	.flush_dyn_mac_table = ksz9477_flush_dyn_mac_table,
+	.phy_setup = ksz9477_phy_setup,
 	.port_setup = ksz9477_port_setup,
 	.shutdown = ksz9477_reset_switch,
 	.detect = ksz9477_switch_detect,
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 8a5111f9414c..6f728429eec6 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -2,7 +2,7 @@
 /*
  * Microchip switch driver main logic
  *
- * Copyright (C) 2017-2018 Microchip Technology Inc.
+ * Copyright (C) 2017-2019 Microchip Technology Inc.
  */
 
 #include <linux/delay.h>
@@ -238,6 +238,7 @@ int ksz_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy)
 
 	/* setup slave port */
 	dev->dev_ops->port_setup(dev, port, false);
+	dev->dev_ops->phy_setup(dev, port, phy);
 
 	/* port_stp_state_set() will be called after to enable the port so
 	 * there is no need to do anything.
diff --git a/drivers/net/dsa/microchip/ksz_priv.h b/drivers/net/dsa/microchip/ksz_priv.h
index 60b49010904b..0fdc58bdd503 100644
--- a/drivers/net/dsa/microchip/ksz_priv.h
+++ b/drivers/net/dsa/microchip/ksz_priv.h
@@ -2,7 +2,7 @@
  *
  * Microchip KSZ series switch common definitions
  *
- * Copyright (C) 2017-2018 Microchip Technology Inc.
+ * Copyright (C) 2017-2019 Microchip Technology Inc.
  */
 
 #ifndef __KSZ_PRIV_H
@@ -137,6 +137,8 @@ struct ksz_dev_ops {
 	u32 (*get_port_addr)(int port, int offset);
 	void (*cfg_port_member)(struct ksz_device *dev, int port, u8 member);
 	void (*flush_dyn_mac_table)(struct ksz_device *dev, int port);
+	void (*phy_setup)(struct ksz_device *dev, int port,
+			  struct phy_device *phy);
 	void (*port_setup)(struct ksz_device *dev, int port, bool cpu_port);
 	void (*r_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
 	void (*w_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 val);