[Intel-gfx] [PATCH] drm/i915/tgl: Make wa_1606700617 permanent

[Souza, Jose]

On Thu, 2020-03-05 at 10:12 -0800, Swathi Dhanavanthri wrote:
> This workaround is to disable FF DOP Clock gating. The fix
> in B0 was backed out due to timing reasons and decided to
> be made permanent.
> Bspec: 52890

Reviewed-by: José Roberto de Souza <jose.souza at intel.com>

> 
> Signed-off-by: Swathi Dhanavanthri <swathi.dhanavanthri at intel.com>
> ---
>  drivers/gpu/drm/i915/gt/intel_workarounds.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> index cb7d85c42f13..a9d1975b5245 100644
> --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> @@ -1337,11 +1337,6 @@ rcs_engine_wa_init(struct intel_engine_cs
> *engine, struct i915_wa_list *wal)
>  	struct drm_i915_private *i915 = engine->i915;
>  
>  	if (IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0)) {
> -		/* Wa_1606700617:tgl */
> -		wa_masked_en(wal,
> -			     GEN9_CS_DEBUG_MODE1,
> -			     FF_DOP_CLOCK_GATE_DISABLE);
> -
>  		/*
>  		 * Wa_1607138336:tgl
>  		 * Wa_1607063988:tgl
> @@ -1393,6 +1388,11 @@ rcs_engine_wa_init(struct intel_engine_cs
> *engine, struct i915_wa_list *wal)
>  		/* Wa_1409804808:tgl */
>  		wa_masked_en(wal, GEN7_ROW_CHICKEN2,
>  			     GEN12_PUSH_CONST_DEREF_HOLD_DIS);
> +
> +		/* Wa_1606700617:tgl */
> +		wa_masked_en(wal,
> +			     GEN9_CS_DEBUG_MODE1,
> +			     FF_DOP_CLOCK_GATE_DISABLE);
>  	}
>  
>  	if (IS_GEN(i915, 11)) {