i915 must disable Render DOP clock gating globally. v2: - Addressed cosmetic review comments. Bspec: 52621 Cc: Matt Roper <matthew.d.roper@xxxxxxxxx> Cc: Badal Nilawar <badal.nilawar@xxxxxxxxx> Signed-off-by: Anshuman Gupta <anshuman.gupta@xxxxxxxxx> --- 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
