diff --git a/drivers/pinctrl/rockchip/pinctrl-rk3188.c b/drivers/pinctrl/rockchip/pinctrl-rk3188.c
index 83db51f66ae..3a93db5622d 100644
--- a/drivers/pinctrl/rockchip/pinctrl-rk3188.c
+++ b/drivers/pinctrl/rockchip/pinctrl-rk3188.c
@@ -105,7 +105,7 @@ static struct rockchip_pin_bank rk3188_pin_banks[] = {
 	PIN_BANK(3, 32, "gpio3"),
 };
 
-static struct rockchip_pin_ctrl rk3188_pin_ctrl = {
+static const struct rockchip_pin_ctrl rk3188_pin_ctrl = {
 	.pin_banks		= rk3188_pin_banks,
 	.nr_banks		= ARRAY_SIZE(rk3188_pin_banks),
 	.grf_mux_offset		= 0x60,