diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 01cf8e00e0c7..4f84c3e14c98 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -1506,6 +1506,9 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
 	if (bank->recalced_mask & BIT(pin))
 		rockchip_get_recalced_mux(bank, pin, &reg, &bit, &mask);
 
+	if (mux > mask)
+		return -EINVAL;
+
 	if (bank->route_mask & BIT(pin)) {
 		if (rockchip_get_mux_route(bank, pin, mux, &route_reg,
 					   &route_val)) {