[Intel-gfx] [PATCH v2 4/4] drm/i915/mtl: WA to clear RDOP clock gating

[Matt Atwood]

On Tue, Apr 18, 2023 at 03:04:46PM -0700, Radhakrishna Sripada wrote:
> From: Haridhar Kalvala <haridhar.kalvala at intel.com>
> 
> Workaround implementation to clear RDOP clock gating.
> 
> Bspec: 33453
A better bspec value here is 53509, you're referencing a non-updating
page
> 
With that.
Reviewed-by: Matt Atwood <matthew.s.atwood at intel.com>
> Signed-off-by: Haridhar Kalvala <haridhar.kalvala at intel.com>
> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
> ---
>  drivers/gpu/drm/i915/gt/intel_workarounds.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> index b925ef47304b..312eb8b5f949 100644
> --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> @@ -1703,6 +1703,9 @@ xelpg_gt_workarounds_init(struct intel_gt *gt, struct i915_wa_list *wal)
>  		/* Wa_18018781329 */
>  		wa_mcr_write_or(wal, RENDER_MOD_CTRL, FORCE_MISS_FTLB);
>  		wa_mcr_write_or(wal, COMP_MOD_CTRL, FORCE_MISS_FTLB);
> +
> +		/* Wa_14015795083 */
> +		wa_write_clr(wal, GEN7_MISCCPCTL, GEN12_DOP_CLOCK_GATE_RENDER_ENABLE);
>  	}
>  
>  	/*
> -- 
> 2.34.1
>