i915 must disable Render DOP clock gating globally.
v2:
- Addressed cosmetic review comments.
Bspec: 52621
Cc: Matt Roper <matthew.d.ro...@intel.com>
Cc: Badal Nilawar <badal.nila...@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gu...@intel.com>
---
drivers/gpu/drm/i915/gt/intel_gt_regs.h | 1 +
drivers/gpu/drm/i915/gt/intel_workarounds.c | 3 +++
2 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h
b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
index 6aa1ceaa8d27..c8129a351731 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
@@ -631,6 +631,7 @@
#define GEN7_MISCCPCTL _MMIO(0x9424)
#define GEN7_DOP_CLOCK_GATE_ENABLE (1 << 0)
+#define GEN12_DOP_CLOCK_GATE_RENDER_ENABLE REG_BIT(1)
#define GEN8_DOP_CLOCK_GATE_CFCLK_ENABLE (1 << 2)
#define GEN8_DOP_CLOCK_GATE_GUC_ENABLE (1 << 4)
#define GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE (1 << 6)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c
b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 6e875d4f5f65..1e7ca3863f20 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1486,6 +1486,9 @@ dg2_gt_workarounds_init(struct intel_gt *gt, struct
i915_wa_list *wal)
* performance guide section.
*/
wa_write_or(wal, GEN12_SQCM, EN_32B_ACCESS);
+
+ /* Wa_14015795083 */
+ wa_write_clr(wal, GEN7_MISCCPCTL, GEN12_DOP_CLOCK_GATE_RENDER_ENABLE);
}
static void
--
2.26.2
