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[0/1] DG2 DMC Support

Message ID 20220503235729.617954-1-anusha.srivatsa@intel.com (mailing list archive)
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Series DG2 DMC Support | expand

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Srivatsa, Anusha May 3, 2022, 11:57 p.m. UTC 
While DG2 supports DC5 and DC9, some of the tests in
fast-feedback blew up DG2 when the tests forced transition
from dc5->dc9 on suspend and dc9->dc5 on resume. Some local
experiments performed with Rodrigo on a RIL system  showed promising
results when dc5 was completely diabled and i915 took only dc9 paths.

Sending this so we can check the CI results to confirm the
findings from local testing which will hopefully help narrow
down the root cause of MMIO BAR lost issue

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Imre Deak <imre.deak@intel.com>

Anusha Srivatsa (1):
  drm/i915/dmc: Load DMC on DG2

 drivers/gpu/drm/i915/display/intel_display_power.c |  4 +++-
 drivers/gpu/drm/i915/display/intel_dmc.c           | 10 +++++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

Comments

Rodrigo Vivi May 4, 2022, 12:41 a.m. UTC | #1 
On Tue, May 03, 2022 at 04:57:28PM -0700, Anusha Srivatsa wrote:
> While DG2 supports DC5 and DC9, some of the tests in
> fast-feedback blew up DG2 when the tests forced transition
> from dc5->dc9 on suspend and dc9->dc5 on resume. Some local
> experiments performed with Rodrigo on a RIL system  showed promising
> results when dc5 was completely diabled and i915 took only dc9 paths.
> 
> Sending this so we can check the CI results to confirm the
> findings from local testing which will hopefully help narrow
> down the root cause of MMIO BAR lost issue
> 
> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> Cc: Imre Deak <imre.deak@intel.com>

Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

thanks for sending this.
We definitely need this for now while we work to understand the dc5.

> 
> Anusha Srivatsa (1):
>   drm/i915/dmc: Load DMC on DG2
> 
>  drivers/gpu/drm/i915/display/intel_display_power.c |  4 +++-
>  drivers/gpu/drm/i915/display/intel_dmc.c           | 10 +++++++++-
>  2 files changed, 12 insertions(+), 2 deletions(-)
> 
> -- 
> 2.25.1
>