diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 78d544224678..0f275b8d22ea 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -415,6 +415,20 @@ static void mt7530_pll_setup(struct mt7530_priv *priv)
 	core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN);
 }
 
+/* If port 6 is available as a CPU port, always prefer that as the default,
+ * otherwise don't care.
+ */
+static struct dsa_port *
+mt753x_preferred_default_local_cpu_port(struct dsa_switch *ds)
+{
+	struct dsa_port *cpu_dp = dsa_to_port(ds, 6);
+
+	if (dsa_port_is_cpu(cpu_dp))
+		return cpu_dp;
+
+	return NULL;
+}
+
 /* Setup port 6 interface mode and TRGMII TX circuit */
 static int
 mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
@@ -3381,6 +3395,7 @@ static int mt753x_set_mac_eee(struct dsa_switch *ds, int port,
 static const struct dsa_switch_ops mt7530_switch_ops = {
 	.get_tag_protocol	= mtk_get_tag_protocol,
 	.setup			= mt753x_setup,
+	.preferred_default_local_cpu_port = mt753x_preferred_default_local_cpu_port,
 	.get_strings		= mt7530_get_strings,
 	.get_ethtool_stats	= mt7530_get_ethtool_stats,
 	.get_sset_count		= mt7530_get_sset_count,
diff --git a/include/net/dsa.h b/include/net/dsa.h
index bec439c4a085..e57d6e65f27e 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -705,6 +705,14 @@ struct dsa_switch_ops {
 			       struct phy_device *phy);
 	void	(*port_disable)(struct dsa_switch *ds, int port);
 
+	/*
+	 * Compatibility between device trees defining multiple CPU ports and
+	 * drivers which are not OK to use by default the numerically smallest
+	 * CPU port of a switch for its local ports. This can return NULL,
+	 * meaning "don't know/don't care".
+	 */
+	struct dsa_port *(*preferred_default_local_cpu_port)(struct dsa_switch *ds);
+
 	/*
 	 * Port's MAC EEE settings
 	 */
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 9751bee3fb2f..543834e31298 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -386,6 +386,24 @@ static int dsa_tree_setup_default_cpu(struct dsa_switch_tree *dst)
 	return 0;
 }
 
+static struct dsa_port *
+dsa_switch_preferred_default_local_cpu_port(struct dsa_switch *ds)
+{
+	struct dsa_port *cpu_dp;
+
+	if (!ds->ops->preferred_default_local_cpu_port)
+		return NULL;
+
+	cpu_dp = ds->ops->preferred_default_local_cpu_port(ds);
+	if (!cpu_dp)
+		return NULL;
+
+	if (WARN_ON(!dsa_port_is_cpu(cpu_dp) || cpu_dp->ds != ds))
+		return NULL;
+
+	return cpu_dp;
+}
+
 /* Perform initial assignment of CPU ports to user ports and DSA links in the
  * fabric, giving preference to CPU ports local to each switch. Default to
  * using the first CPU port in the switch tree if the port does not have a CPU
@@ -393,12 +411,16 @@ static int dsa_tree_setup_default_cpu(struct dsa_switch_tree *dst)
  */
 static int dsa_tree_setup_cpu_ports(struct dsa_switch_tree *dst)
 {
-	struct dsa_port *cpu_dp, *dp;
+	struct dsa_port *preferred_cpu_dp, *cpu_dp, *dp;
 
 	list_for_each_entry(cpu_dp, &dst->ports, list) {
 		if (!dsa_port_is_cpu(cpu_dp))
 			continue;
 
+		preferred_cpu_dp = dsa_switch_preferred_default_local_cpu_port(cpu_dp->ds);
+		if (preferred_cpu_dp && preferred_cpu_dp != cpu_dp)
+			continue;
+
 		list_for_each_entry(dp, &dst->ports, list) {
 			/* Prefer a local CPU port */
 			if (dp->ds != cpu_dp->ds)