Enable HOST1X interface
configname: CONFIG_DRM_TEGRA_STAGING
Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Enable HOST1X interface
In linux kernel since version 3.1 (release Date: 2011-10-24)
Say yes if HOST1X should be available for userspace DRM users.
If unsure, choose N.
If unsure, choose N.