[PATCH] drm/panfrost: Add "compute shader only" hint

[Rob Herring]

On Tue, Aug 6, 2019 at 2:11 PM Alyssa Rosenzweig
<alyssa.rosenzweig at collabora.com> wrote:
>
> > Why don't we just go ahead and enable JS2?
>
> It's not obvious to me when it actually needs to be enabled. Besides the
> errata, it's only when... device_nr=1 for a compute-only job in kbase?
>
> I'm afraid I don't know nearly enough about how kbase plumbs CL to grok
> the signifiance...

Figuring out the nr_core_groups was the complicated part of this as I
recall. Seems like we should at least figure out if we (or will need)
PANFROST_JD_REQ_CORE_GRP_MASK added to the UAPI as well.

Rob