drm/i915/tgl: Add note to Wa_1607297627

Add note about the confliting information in BSpec about this WA.

BSpec: 52890
Acked-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200227220101.321671-5-jose.souza@intel.com

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 3021cc1..5f5eab7 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1338,9 +1338,13 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
                            GEN9_CTX_PREEMPT_REG,
                            GEN12_DISABLE_POSH_BUSY_FF_DOP_CG);
 
-               /* Wa_1607030317:tgl */
-               /* Wa_1607186500:tgl */
-               /* Wa_1607297627:tgl */
+               /*
+                * Wa_1607030317:tgl
+                * Wa_1607186500:tgl
+                * Wa_1607297627:tgl there is 3 entries for this WA on BSpec, 2
+                * of then says it is fixed on B0 the other one says it is
+                * permanent
+                */
                wa_masked_en(wal,
                             GEN6_RC_SLEEP_PSMI_CONTROL,
                             GEN12_WAIT_FOR_EVENT_POWER_DOWN_DISABLE |