[PATCH] rockchip: rk3328: Set VOP QoS to high priority

[Nicolas Frattaroli]

On Mittwoch, 4. Januar 2023 12:21:35 CET Jagan Teki wrote:
> On Sat, Jul 23, 2022 at 10:31 PM Nicolas Frattaroli
> <frattaroli.nicolas at gmail.com> wrote:
> >
> > The default priority for the quality of service for the video
> > output results in unsightly glitches on the output whenever there
> > is memory pressure on the system, which happens a lot.
> >
> > This sets the VOP QoS to high priority, which fixes this issue.
> 
> Can you point out how it reproduces?
> 
> Jagan.
> 

To reproduce, run something like glmark2-es2-drm while also
running stress --vm 4, you should see glitchy output on the
HDMI on rk3328.

A more real-world test is to just run a desktop environment,
you will see horizontal lines through the screen the moment
you start typing in e.g. a terminal emulator.

Cheers,
Nicolas Frattaroli