Yes, the Freedreno work is a really good start, and an admirable one at that which has reached fruition! I think there's quite a lot of closed userspace driver

Yes, the Freedreno work is a really good start, and an admirable one at that which has reached fruition! I think there's quite a lot of closed userspace drivers that need (or would benefit from being) freed - I don't have a list to hand, but a quick look inside the /vendor partition (and directory) of a recent phone will give an idea of the closed userspace drivers being shipped on devices.