diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
index ad31b3eb408fdee2138b6144c8d647bd9877b7fc..0e4eb845cbb0f5911a9e89bd2346cf62f006c4af 100644
--- a/drivers/gpu/drm/rockchip/Kconfig
+++ b/drivers/gpu/drm/rockchip/Kconfig
@@ -24,6 +24,7 @@ config ROCKCHIP_ANALOGIX_DP
 config ROCKCHIP_CDN_DP
         tristate "Rockchip cdn DP"
         depends on DRM_ROCKCHIP
+	depends on EXTCON
 	select SND_SOC_HDMI_CODEC if SND_SOC
         help
 	  This selects support for Rockchip SoC specific extensions