diff --git a/projects/Rockchip/devices/RK3399/linux/default/linux.aarch64.conf b/projects/Rockchip/devices/RK3399/linux/default/linux.aarch64.conf
index 16608d5ff5..2f307d9d90 100644
--- a/projects/Rockchip/devices/RK3399/linux/default/linux.aarch64.conf
+++ b/projects/Rockchip/devices/RK3399/linux/default/linux.aarch64.conf
@@ -4501,7 +4501,7 @@ CONFIG_DRM_ROCKCHIP=y
 CONFIG_ROCKCHIP_VOP=y
 # CONFIG_ROCKCHIP_VOP2 is not set
 # CONFIG_ROCKCHIP_ANALOGIX_DP is not set
-# CONFIG_ROCKCHIP_CDN_DP is not set
+CONFIG_ROCKCHIP_CDN_DP=y
 CONFIG_ROCKCHIP_DW_HDMI=y
 CONFIG_ROCKCHIP_DW_MIPI_DSI=y
 # CONFIG_ROCKCHIP_INNO_HDMI is not set