Arkadiusz Hiler <arkadiusz.hiler@xxxxxxxxx> writes:
> This basically reverts commit 465418c6064c
> ("drm/i915/gen9: Remove WaEnableYV12BugFixInHalfSliceChicken7")
> with small addition - marking it as affecting KBL as well.
>
> It was incorrectly considered fixed in production steppings.
>
> References: HSD#2126385, HSD#2131381, HSDES#1504433555, BSID#0764
> Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
> Cc: Jeff McGee <jeff.mcgee@xxxxxxxxx>
> Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@xxxxxxxxx>
Pushed, thanks for the patch.
-Mika
> ---
> drivers/gpu/drm/i915/intel_engine_cs.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
> index 483ed76..49c2315 100644
> --- a/drivers/gpu/drm/i915/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/intel_engine_cs.c
> @@ -851,8 +851,10 @@ static int gen9_init_workarounds(struct intel_engine_cs *engine)
> */
> }
>
> + /* WaEnableYV12BugFixInHalfSliceChicken7:skl,bxt,kbl,glk */
> /* WaEnableSamplerGPGPUPreemptionSupport:skl,bxt,kbl */
> WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,
> + GEN9_ENABLE_YV12_BUGFIX |
> GEN9_ENABLE_GPGPU_PREEMPTION);
>
> /* Wa4x4STCOptimizationDisable:skl,bxt,kbl,glk */
> --
> 2.9.3
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