diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index 66fb407962cc..fe28fe92be91 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -1825,9 +1825,10 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int rockchip_usb2phy_low_power_enable(struct rockchip_usb2phy *rphy,
-					struct rockchip_usb2phy_port *rport,
-					bool value)
+static int __maybe_unused
+rockchip_usb2phy_low_power_enable(struct rockchip_usb2phy *rphy,
+				  struct rockchip_usb2phy_port *rport,
+				  bool value)
 {
 	int ret = 0;