diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 898d5642b516b8fd7f4821549dcba08e95d78ba1..7aecc98d0a189d80c98e829ef147a09cff387c65 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -754,11 +754,14 @@ static int bcm_sf2_sw_setup(struct dsa_switch *ds)
 	struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
 	unsigned int port;
 
-	/* Disable unused ports and configure IMP port */
+	/* Enable all valid ports and disable those unused */
 	for (port = 0; port < priv->hw_params.num_ports; port++) {
-		if (dsa_is_cpu_port(ds, port))
+		/* IMP port receives special treatment */
+		if ((1 << port) & ds->enabled_port_mask)
+			bcm_sf2_port_setup(ds, port, NULL);
+		else if (dsa_is_cpu_port(ds, port))
 			bcm_sf2_imp_setup(ds, port);
-		else if (!((1 << port) & ds->enabled_port_mask))
+		else
 			bcm_sf2_port_disable(ds, port, NULL);
 	}