diff --git a/drivers/gpu/drm/exynos/exynos_ddc.c b/drivers/gpu/drm/exynos/exynos_ddc.c
index 30ef41bcd7b8fa5ed0554adf8bc3332cf19a1320..d1e539b1649c55d400ca025d6631a21a4f9b2da0 100644
--- a/drivers/gpu/drm/exynos/exynos_ddc.c
+++ b/drivers/gpu/drm/exynos/exynos_ddc.c
@@ -15,7 +15,7 @@
 
 #include <linux/kernel.h>
 #include <linux/i2c.h>
-
+#include <linux/of.h>
 
 #include "exynos_drm_drv.h"
 #include "exynos_hdmi.h"
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
index a8ab4a456afa906e5c81dab0a53ad8e01d747156..b047597d1f6b4aa7d10a2fb25a3e9979d7c20cad 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
@@ -17,6 +17,7 @@
 #include <linux/regmap.h>
 #include <linux/clk.h>
 #include <linux/pm_runtime.h>
+#include <linux/of.h>
 
 #include <drm/drmP.h>
 #include <drm/exynos_drm.h>
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 1c263dac3c1c8ddcbee197d13143a428ac4b01a2..19328d03e46d66428b704c0553f61b1e74e3a471 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -16,6 +16,7 @@
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
+#include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/pm_runtime.h>
 
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 2f5c6942c968bd7a1f9ed4e16adcb8f4c7a99d35..aecc601d540b22201c8745e07bfd8fb556256a0f 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -32,6 +32,7 @@
 #include <linux/clk.h>
 #include <linux/regulator/consumer.h>
 #include <linux/io.h>
+#include <linux/of.h>
 #include <linux/of_gpio.h>
 
 #include <drm/exynos_drm.h>
diff --git a/drivers/gpu/drm/exynos/exynos_hdmiphy.c b/drivers/gpu/drm/exynos/exynos_hdmiphy.c
index 6e320ae9afedc758b4a61282e030c099adf152db..6021996d3530b15dec1c49db0a0ac0be1bd5aec2 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmiphy.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmiphy.c
@@ -15,6 +15,7 @@
 
 #include <linux/kernel.h>
 #include <linux/i2c.h>
+#include <linux/of.h>
 
 #include "exynos_drm_drv.h"
 #include "exynos_hdmi.h"
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index c9a137caea41108a18b8c179a39110c3d64e6a5b..f6cb1205a2fd56b235afbc3a186f96af56e77301 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -30,6 +30,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/clk.h>
 #include <linux/regulator/consumer.h>
+#include <linux/of.h>
 
 #include <drm/exynos_drm.h>