From: Oscar Mateo <oscar.mateo@intel.com>
Date: Tue, 8 May 2018 14:29:32 -0700
Subject: drm/i915/icl: Wa_1406680159
Git-commit: 36204d80bacb5382c7944fceb14975c727def102
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Disable GWL clock gating to prevent an issue that might
cause hangs.
v2: Rebased on top of the WA refactoring
v3: Wa_2201832410 officially merged with Wa_1406680159
v4: Added References (Mika)
v5:
- Rebased
- C, not lisp (Chris)
- Add reference where WA is better explained (Rodrigo)
- Add reference to WA that got merged with this
References: HSDES#1406681710
References: HSDES#1406680159
References: HSDES#2201832410
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525814984-20039-11-git-send-email-oscar.mateo@intel.com
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/i915/intel_workarounds.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -745,6 +745,11 @@ static void icl_gt_workarounds_apply(str
I915_WRITE(SLICE_UNIT_LEVEL_CLKGATE,
I915_READ(SLICE_UNIT_LEVEL_CLKGATE) |
MSCUNIT_CLKGATE_DIS);
+
+ /* Wa_1406680159:icl */
+ I915_WRITE(SUBSLICE_UNIT_LEVEL_CLKGATE,
+ I915_READ(SUBSLICE_UNIT_LEVEL_CLKGATE) |
+ GWUNIT_CLKGATE_DIS);
}
void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)