diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
index 1ef6d9630f7e..fbaeb7ca600d 100644
--- a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
+++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
@@ -122,6 +122,8 @@ struct rockchip_combphy_grfcfg {
 	struct combphy_reg pipe_xpcs_phy_ready;
 	struct combphy_reg pipe_pcie1l0_sel;
 	struct combphy_reg pipe_pcie1l1_sel;
+	struct combphy_reg u3otg0_port_en;
+	struct combphy_reg u3otg1_port_en;
 };
 
 struct rockchip_combphy_cfg {
@@ -431,6 +433,14 @@ static int rk3568_combphy_cfg(struct rockchip_combphy_priv *priv)
 		rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_txcomp_sel, false);
 		rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_txelec_sel, false);
 		rockchip_combphy_param_write(priv->phy_grf, &cfg->usb_mode_set, true);
+		switch (priv->id) {
+		case 0:
+			rockchip_combphy_param_write(priv->pipe_grf, &cfg->u3otg0_port_en, true);
+			break;
+		case 1:
+			rockchip_combphy_param_write(priv->pipe_grf, &cfg->u3otg1_port_en, true);
+			break;
+		}
 		break;
 
 	case PHY_TYPE_SATA:
@@ -574,6 +584,8 @@ static const struct rockchip_combphy_grfcfg rk3568_combphy_grfcfgs = {
 	/* pipe-grf */
 	.pipe_con0_for_sata	= { 0x0000, 15, 0, 0x00, 0x2220 },
 	.pipe_xpcs_phy_ready	= { 0x0040, 2, 2, 0x00, 0x01 },
+	.u3otg0_port_en		= { 0x0104, 15, 0, 0x0181, 0x1100 },
+	.u3otg1_port_en		= { 0x0144, 15, 0, 0x0181, 0x1100 },
 };
 
 static const struct rockchip_combphy_cfg rk3568_combphy_cfgs = {