Re: [PATCH RFT v2] drm/msm/dpu: enable virtual planes by default

[Dmitry Baryshkov]

On Sat, Mar 14, 2026 at 04:06:37PM -0300, Val Packett wrote:
> On 2/26/26 10:49 AM, Dmitry Baryshkov wrote:
> 
> > Turn on the switch and use virtual planes by default, enhancing
> > utilisation of the display pipelines. It is still possible to use legacy
> > implementation by using `msm.dpu_use_virtual_planes=false` kernel boot
> > parameter.
> > 
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> > ---
> > This is being sent as an RFT for now. Please give it a test with your
> > compositor of choice. X11. Weston. Sway. Wlroot. CrOS. I plan to turn
> > the switch for 7.1
> 
> Tested-by: Val Packett <val@xxxxxxxxxxxx> # x1e80100-dell-latitude-7455,
> with niri
> 
> Running with this for a few days, seems like no change, everything works as
> before. Any way to confirm virtual planes are being used?

You can compare, which SSPPs are used by checking
/sys/kernel/debug/dri/*/state.

-- 
With best wishes
Dmitry