Re: [PATCH v20] drm/msm/dpu: Enable quad-pipe for DSC and dual-DSI case

[Dmitry Baryshkov]

On Wed, May 20, 2026 at 04:41:29PM +0300, Dmitry Baryshkov wrote:
> On Wed, 15 Apr 2026 11:15:11 +0800, Jun Nie wrote:
> > To support high-resolution cases that exceed the width constrain
> > or scenarios that surpass the maximum MDP clock rate, additional
> > pipes are necessary to enable parallel data processing within
> > the width constraints and MDP clock rate.
> > 
> > Expand pipe array size to 4. Request 4 mixers and 4 DSCs for
> > high-resolution cases where dual interfaces are enabled for virtual
> > plane case. More use cases can be incorporated later if quad-pipe
> > capabilities are required.
> > 
> > [...]
> 
> Applied to msm-next, thanks!
> 
> [1/1] drm/msm/dpu: Enable quad-pipe for DSC and dual-DSI case
>       https://gitlab.freedesktop.org/lumag/msm/-/commit/218eb06a72bf

And I'm going to drop it again.

I tested on the SDM845, it tried enabling QUAD_PIPE for the follwing
mode, which then broke the display.

        mode: "3840x2160": 30 297000 3840 4016 4104 4400 2160 2168 2178 2250 0x40 0x5

-- 
With best wishes
Dmitry