Is it possible to use freedreno on adreno 305 in chroot environment ？

[e-cl]

Hello. Is it possible to use freedreno on adreno 305 in chroot environment on android? Thank you.

[robclark]

Most/all existing android devices use the downstream kgsl kernel driver, which is not really supported by freedreno.. a305 itself should work with an upstream kernel (in a chroot or otherwise).. adding upstream kernel support for your device might be some work (and blob android driver would probably not work with the upstream kernel)

[e-cl]

@robclark Thank you sir. But do i have any options in case of current downstream kernel then?

[robclark]

generally not easy options.. maybe check https://wiki.postmarketos.org/wiki/Devices, possibly someone has already started porting upstream kernel to your device or a fairly similar device. The opposite direction (backport upstream kernel or make things work with whatever kgsl your kernel branch has) might be possible.. but I won't claim it will be easy. I mean given enough work anything is possible.

In general supporting random downstream kgsl versions is hard, and not something I really try to do, given that there is already enough work supporting the different gpu versions on a known and stable upstream kernel uabi.