diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index 528de481b319..1058b6883caa 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -898,18 +898,6 @@ static void ksz8_w_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 val)
 	}
 }
 
-static u32 ksz8_sw_get_phy_flags(struct dsa_switch *ds, int port)
-{
-	/* Silicon Errata Sheet (DS80000830A):
-	 * Port 1 does not work with LinkMD Cable-Testing.
-	 * Port 1 does not respond to received PAUSE control frames.
-	 */
-	if (!port)
-		return MICREL_KSZ8_P1_ERRATA;
-
-	return 0;
-}
-
 static void ksz8_cfg_port_member(struct ksz_device *dev, int port, u8 member)
 {
 	u8 data;
@@ -1476,8 +1464,8 @@ static void ksz8_get_caps(struct ksz_device *dev, int port,
 
 static const struct dsa_switch_ops ksz8_switch_ops = {
 	.get_tag_protocol	= ksz_get_tag_protocol,
-	.get_phy_flags		= ksz8_sw_get_phy_flags,
-	.setup			= ksz8_setup,
+	.get_phy_flags		= ksz_get_phy_flags,
+	.setup			= ksz_setup,
 	.phy_read		= ksz_phy_read16,
 	.phy_write		= ksz_phy_write16,
 	.phylink_get_caps	= ksz_phylink_get_caps,
@@ -1544,6 +1532,7 @@ static void ksz8_switch_exit(struct ksz_device *dev)
 }
 
 static const struct ksz_dev_ops ksz8_dev_ops = {
+	.setup = ksz8_setup,
 	.get_port_addr = ksz8_get_port_addr,
 	.cfg_port_member = ksz8_cfg_port_member,
 	.flush_dyn_mac_table = ksz8_flush_dyn_mac_table,
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
index d70e0c32b309..d7474d9d4384 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -47,9 +47,8 @@ static void ksz9477_port_cfg32(struct ksz_device *dev, int port, int offset,
 			   bits, set ? bits : 0);
 }
 
-static int ksz9477_change_mtu(struct dsa_switch *ds, int port, int mtu)
+static int ksz9477_change_mtu(struct ksz_device *dev, int port, int mtu)
 {
-	struct ksz_device *dev = ds->priv;
 	u16 frame_size, max_frame = 0;
 	int i;
 
@@ -65,7 +64,7 @@ static int ksz9477_change_mtu(struct dsa_switch *ds, int port, int mtu)
 				  REG_SW_MTU_MASK, max_frame);
 }
 
-static int ksz9477_max_mtu(struct dsa_switch *ds, int port)
+static int ksz9477_max_mtu(struct ksz_device *dev, int port)
 {
 	return KSZ9477_MAX_FRAME_SIZE - VLAN_ETH_HLEN - ETH_FCS_LEN;
 }
@@ -1296,7 +1295,7 @@ static int ksz9477_setup(struct dsa_switch *ds)
 
 static const struct dsa_switch_ops ksz9477_switch_ops = {
 	.get_tag_protocol	= ksz_get_tag_protocol,
-	.setup			= ksz9477_setup,
+	.setup			= ksz_setup,
 	.phy_read		= ksz_phy_read16,
 	.phy_write		= ksz_phy_write16,
 	.phylink_mac_link_down	= ksz_mac_link_down,
@@ -1320,8 +1319,8 @@ static const struct dsa_switch_ops ksz9477_switch_ops = {
 	.port_mirror_add	= ksz_port_mirror_add,
 	.port_mirror_del	= ksz_port_mirror_del,
 	.get_stats64		= ksz_get_stats64,
-	.port_change_mtu	= ksz9477_change_mtu,
-	.port_max_mtu		= ksz9477_max_mtu,
+	.port_change_mtu	= ksz_change_mtu,
+	.port_max_mtu		= ksz_max_mtu,
 };
 
 static u32 ksz9477_get_port_addr(int port, int offset)
@@ -1382,6 +1381,7 @@ static void ksz9477_switch_exit(struct ksz_device *dev)
 }
 
 static const struct ksz_dev_ops ksz9477_dev_ops = {
+	.setup = ksz9477_setup,
 	.get_port_addr = ksz9477_get_port_addr,
 	.cfg_port_member = ksz9477_cfg_port_member,
 	.flush_dyn_mac_table = ksz9477_flush_dyn_mac_table,
@@ -1405,6 +1405,8 @@ static const struct ksz_dev_ops ksz9477_dev_ops = {
 	.fdb_del = ksz9477_fdb_del,
 	.mdb_add = ksz9477_mdb_add,
 	.mdb_del = ksz9477_mdb_del,
+	.change_mtu = ksz9477_change_mtu,
+	.max_mtu = ksz9477_max_mtu,
 	.shutdown = ksz9477_reset_switch,
 	.init = ksz9477_switch_init,
 	.exit = ksz9477_switch_exit,
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 8f79ff1ac648..19f8e492d3aa 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -16,6 +16,7 @@
 #include <linux/if_bridge.h>
 #include <linux/of_device.h>
 #include <linux/of_net.h>
+#include <linux/micrel_phy.h>
 #include <net/dsa.h>
 #include <net/switchdev.h>
 
@@ -593,6 +594,14 @@ static void ksz_update_port_member(struct ksz_device *dev, int port)
 	dev->dev_ops->cfg_port_member(dev, port, port_member | cpu_port);
 }
 
+int ksz_setup(struct dsa_switch *ds)
+{
+	struct ksz_device *dev = ds->priv;
+
+	return dev->dev_ops->setup(ds);
+}
+EXPORT_SYMBOL_GPL(ksz_setup);
+
 static void port_r_cnt(struct ksz_device *dev, int port)
 {
 	struct ksz_port_mib *mib = &dev->ports[port].mib;
@@ -692,6 +701,23 @@ int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val)
 }
 EXPORT_SYMBOL_GPL(ksz_phy_write16);
 
+u32 ksz_get_phy_flags(struct dsa_switch *ds, int port)
+{
+	struct ksz_device *dev = ds->priv;
+
+	if (dev->chip_id == KSZ8830_CHIP_ID) {
+		/* Silicon Errata Sheet (DS80000830A):
+		 * Port 1 does not work with LinkMD Cable-Testing.
+		 * Port 1 does not respond to received PAUSE control frames.
+		 */
+		if (!port)
+			return MICREL_KSZ8_P1_ERRATA;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ksz_get_phy_flags);
+
 void ksz_mac_link_down(struct dsa_switch *ds, int port, unsigned int mode,
 		       phy_interface_t interface)
 {
@@ -981,6 +1007,30 @@ void ksz_port_mirror_del(struct dsa_switch *ds, int port,
 }
 EXPORT_SYMBOL_GPL(ksz_port_mirror_del);
 
+int ksz_change_mtu(struct dsa_switch *ds, int port, int mtu)
+{
+	struct ksz_device *dev = ds->priv;
+	int ret = -EOPNOTSUPP;
+
+	if (dev->dev_ops->change_mtu)
+		ret = dev->dev_ops->change_mtu(dev, port, mtu);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(ksz_change_mtu);
+
+int ksz_max_mtu(struct dsa_switch *ds, int port)
+{
+	struct ksz_device *dev = ds->priv;
+	int ret = -EOPNOTSUPP;
+
+	if (dev->dev_ops->max_mtu)
+		ret = dev->dev_ops->max_mtu(dev, port);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(ksz_max_mtu);
+
 static int ksz_switch_detect(struct ksz_device *dev)
 {
 	u8 id1, id2;
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 133b1a257868..f7275c4f633a 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -161,6 +161,7 @@ struct alu_struct {
 };
 
 struct ksz_dev_ops {
+	int (*setup)(struct dsa_switch *ds);
 	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);
@@ -207,6 +208,8 @@ struct ksz_dev_ops {
 	int (*get_stp_reg)(void);
 	void (*get_caps)(struct ksz_device *dev, int port,
 			 struct phylink_config *config);
+	int (*change_mtu)(struct ksz_device *dev, int port, int mtu);
+	int (*max_mtu)(struct ksz_device *dev, int port);
 	void (*freeze_mib)(struct ksz_device *dev, int port, bool freeze);
 	void (*port_init_cnt)(struct ksz_device *dev, int port);
 	int (*shutdown)(struct ksz_device *dev);
@@ -232,8 +235,10 @@ extern const struct ksz_chip_data ksz_switch_chips[];
 
 /* Common DSA access functions */
 
+int ksz_setup(struct dsa_switch *ds);
 int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg);
 int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val);
+u32 ksz_get_phy_flags(struct dsa_switch *ds, int port);
 void ksz_mac_link_down(struct dsa_switch *ds, int port, unsigned int mode,
 		       phy_interface_t interface);
 int ksz_sset_count(struct dsa_switch *ds, int port, int sset);
@@ -274,6 +279,8 @@ int ksz_port_mirror_add(struct dsa_switch *ds, int port,
 			bool ingress, struct netlink_ext_ack *extack);
 void ksz_port_mirror_del(struct dsa_switch *ds, int port,
 			 struct dsa_mall_mirror_tc_entry *mirror);
+int ksz_change_mtu(struct dsa_switch *ds, int port, int mtu);
+int ksz_max_mtu(struct dsa_switch *ds, int port);
 
 /* Common register access functions */
 
