No offence, but I think you haven't been keeping up-to-date. The RPi is fully supported by the mainline kernel, most significantly, there is a full atomic DRM k

No offence, but I think you haven't been keeping up-to-date. The RPi is fully supported by the mainline kernel, most significantly, there is a full atomic DRM kernel driver for the VC4 GPU and corresponding Mesa userland, maintained by someone with transistor-level access to hardware documentation. I have great appreciation for the work Maxime Ripard et al. have been doing on mainline support for the various Allwinner chips, hence why I kicked in a few bucks for their kickstarter on reverse-engineering the Allwinner VPU: https://www.kickstarter.com/projects/bootlin/allwinner-vpu-support-in-the-official-linux-kernel https://www.kickstarter.com/projects/bootlin/allwinner-vpu-s... But lets not kid ourselves, none of this was Allwinners doing and they could not give a fuck about mainline Linux.