diff --git a/drivers/phy/rockchip/phy-rockchip-mipi-rx.c b/drivers/phy/rockchip/phy-rockchip-mipi-rx.c
index eab431ed4ceb..328507214e7a 100644
--- a/drivers/phy/rockchip/phy-rockchip-mipi-rx.c
+++ b/drivers/phy/rockchip/phy-rockchip-mipi-rx.c
@@ -34,6 +34,7 @@
 
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>