Re: [PATCH 1/2] drm/i915/gt: Disable HW load balancing for CCS

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On Mon, Feb 19, 2024 at 11:17:33AM +0100, Andi Shyti wrote:
> On Thu, Feb 15, 2024 at 08:55:41AM -0800, Matt Roper wrote:
> > On Thu, Feb 15, 2024 at 02:59:23PM +0100, Andi Shyti wrote:
> > > The hardware should not dynamically balance the load between CCS
> > > engines. Wa_16016805146 recommends disabling it across all
> > 
> > Is this the right workaround number?  When I check the database, this
> > workaround was rejected on both DG2-G10 and DG2-G11, and doesn't even
> > have an entry for DG2-G12.
> > 
> > There are other workarounds that sound somewhat related to load
> > balancing (e.g., part 3 of Wa_14019159160), but what's asked there is
> > more involved than just setting one register bit and conflicts a bit
> > with the second patch of this series.
> 
> thanks for checking it. Indeed the WA I mentioned is limited to
> a specific platform. This recommendation comes in different WA,
> e.g. this one: Wa_14019186972 (3rd point). Will start using that
> as a reference.

actually you are right, I checked with Joonas and I will use
Wa_14019159160.

Thanks,
Andi




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