~ # zcat /proc/config.gz | grep DRM |grep =y
CONFIG_DRM=y
CONFIG_DRM_MIPI_DSI=y
CONFIG_DRM_KMS_HELPER=y
CONFIG_DRM_KMS_FB_HELPER=y
CONFIG_DRM_TTM=y
CONFIG_DRM_NOUVEAU=y
CONFIG_DRM_NOUVEAU_BACKLIGHT=y
CONFIG_DRM_TEGRA=y
CONFIG_DRM_TEGRA_FBDEV=y
CONFIG_DRM_TEGRA_STAGING=y
CONFIG_DRM_PANEL=y
CONFIG_DRM_PANEL_SIMPLE=y