diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 195de30eb90c..bd603ef5e935 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -1024,6 +1024,8 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc)
 		return -EINVAL;
 	}
 
+	drm_plane_create_zpos_immutable_property(primary, 0);
+
 	ret = drm_crtc_init_with_planes(ddev, crtc, primary, NULL,
 					&ltdc_crtc_funcs, NULL);
 	if (ret) {
@@ -1046,6 +1048,7 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc)
 			DRM_ERROR("Can not create overlay plane %d\n", i);
 			goto cleanup;
 		}
+		drm_plane_create_zpos_immutable_property(overlay, i);
 	}
 
 	return 0;