[PATCH] drm/mediatek: Disable AFBC support on Mediatek DRM driver

[Daniel Stone]

On Fri, 24 Oct 2025 at 21:28, Ariel D'Alessandro
<ariel.dalessandro at collabora.com> wrote:
> Commit c410fa9b07c32 ("drm/mediatek: Add AFBC support to Mediatek DRM
> driver") added AFBC support to Mediatek DRM and enabled the
> 32x8/split/sparse modifier.
>
> However, this is currently broken on Mediatek MT8188 (Genio 700 EVK
> platform); tested using upstream Kernel and Mesa (v25.2.1), AFBC is used by
> default since Mesa v25.0.
>
> Kernel trace reports vblank timeouts constantly, and the render is garbled:

Reviewed-by: Daniel Stone <daniels at collabora.com>

This is definitely the right thing to do until we can figure out why
the DRM driver doesn't like the GPU's images, and how we can get it
fixed in either DRM or Mesa.

Cheers,
Daniel