powering off the GPU

[Lucas Stach]

Am Sonntag, den 15.04.2018, 19:19 +0200 schrieb Wladimir J. van der
Laan:
> On Sun, Apr 15, 2018 at 04:48:34PM +0100, James Courtier-Dutton
> wrote:
> > Hi,
> > 
> > Is there any way to power off the GPU without powering off the
> > whole device?
> > When the machine is idle, I would like the GPU to power down.
> 
> The hardware supports this, but I don't think the etnaviv kernel driver currently
> has this functionalty implemented.

It has. We are powering down the GPU after 200ms of inactivity. If
userspace is idle and doesn't submit graphics work, the kernel will
automatically cut clocks and power from the GPU.

Regards,
Lucas