Another PowerVR GPU for those that wonder. They quite notoriously don't have any open-source drivers.

There is a lot of information on the net why that's not the case, from the GPU architecture to source leaks. One could possibly make a shim to load older proprietary kernel modules, but it's hardly worth it: PowerVR GPUs don't seem to be used much nowadays, in contrast with Mali GPUs. And PowerVR GPUs seem to require quite different drivers depending on IP customization.