Created attachment 477510 [details] the new ebuild, which added nexell video card I'm currently going to add nexell support for wayland/drm. Nexell chips can be found on ARM devices using Samsung S5P4418/S5P6818. First start would be adding nexell to libdrm. The ebuild compiles fine under arm with the attached patch, however I've not been able to get drm working with wayland/weston. I'd be very helpful for any hint or advice on how to get this going. Kernel support should be fine, since the module for nexell (nx_vpu & vr) loads.
Created attachment 477512 [details, diff] patch for adding nexell support
I've never heard of nexell. There's no code upstream, and on dri-devel@ searching for nexell brings up only one question from you (from today). I'm not going to add out of tree hardware support to any of my packages. I think your best way forward is to use the /etc/portage/patches mechanism.