On Tue, Jun 07, 2022 at 04:15:42PM +0530, Anshuman Gupta wrote: > 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> Reviewed-by: Matt Roper <matthew.d.roper@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 > -- Matt Roper Graphics Software Engineer VTT-OSGC Platform Enablement Intel Corporation
