diff --git a/arch/arm/mach-rockchip/rk3308/rk3308.c b/arch/arm/mach-rockchip/rk3308/rk3308.c
index 0d11073ddf..8b4f939885 100644
--- a/arch/arm/mach-rockchip/rk3308/rk3308.c
+++ b/arch/arm/mach-rockchip/rk3308/rk3308.c
@@ -120,6 +120,7 @@ int rk_board_init(void)
 		      VCCIO3_3V3 << IOVSEL3_SHIFT;
 	rk_clrsetreg(&grf->soc_con0, IOVSEL3_CTRL_MASK | IOVSEL3_MASK, val);
 
+	gpio_free(GPIO0_A4);
 	return 0;
 }