diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index 13c10e3109f6..c4a76de141d0 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -713,6 +713,7 @@ static int setup_initial_state(struct drm_device *drm_dev,
 		if (ret)
 			goto error_conn;
 
+		mode->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
 		ret = drm_atomic_set_mode_for_crtc(crtc_state, mode);
 		if (ret)
 			goto error_conn;