Overall the etnaviv driver is young, both in mesa and in the linux kernel, so there are lots of nice-to-have features missing and fine-tuning. Christian Gmeine

Overall the etnaviv driver is young, both in mesa and in the linux kernel, so there are lots of nice-to-have features missing and fine-tuning. Christian Gmeiner, Lucas Stach and Wladimir Van Der Laan would all be able to provide you with a more detailed answer.