diff --git a/drivers/video/rockchip/rk_vop.c b/drivers/video/rockchip/rk_vop.c
index ff1a80384d..3bae22a5bc 100644
--- a/drivers/video/rockchip/rk_vop.c
+++ b/drivers/video/rockchip/rk_vop.c
@@ -425,7 +425,7 @@ int rk_vop_bind(struct udevice *dev)
 {
 	struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
 
-	plat->size = 4 * (CONFIG_VIDEO_ROCKCHIP_MAX_XRES *
+	plat->size = VIDEO_BPP32 * (CONFIG_VIDEO_ROCKCHIP_MAX_XRES *
 			  CONFIG_VIDEO_ROCKCHIP_MAX_YRES);
 
 	return 0;