[Letux-kernel] etnaviv on Pyra?!

[H. Nikolaus Schaller]

> Am 20.11.2020 um 23:07 schrieb Andreas Kemnade <andreas at kemnade.info>:
> 
> Hi,
> 
> In kernel 5.4.77 I found this while booting the Pyra.
> 
> root at letux:/dev/dri# dmesg | grep drm
> [    8.795283] [drm] Initialized etnaviv 1.3.0 20151214 for etnaviv on minor 0
> [   10.211757] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> [   10.219602] [drm] No driver support for vblank timestamp query.
> 
> So, Nikolaus has given up the pvrsgx stuff and secretly placed a
> vivante GPU into the Pyra remotely? ;-)

Yes, I did some tachyon beaming and wormhole tunneling to travel back
in spacetime to bribe OMAP5 VHDL designers to ... :)

The OMAP5 comes not only with a PVR/SGX544 but also a Vivante GC320 (dedicated 2D graphics core)
which is supposed to be controlled by the etnaviv driver.

> That produces another /dev/dri/something which can confuse userland.

Ok. Maybe you can blacklist the driver for experimentations.

> Never seen this before an the Pyra.

Yes, it is quite new.

BR,
Nikolaus