On Mon, 06 Jun 2022, Anshuman Gupta <anshuman.gupta@xxxxxxxxx> wrote: > i915 must disable Render DOP clock gating globally. > > B.Spec: 52621 Please use Bspec: BR, Jani. > 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 | 5 +++++ > 2 files changed, 6 insertions(+) > > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h > index 58e9b464d564..55a291ab5536 100644 > --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h > +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h > @@ -630,6 +630,7 @@ > > #define GEN7_MISCCPCTL _MMIO(0x9424) > #define GEN7_DOP_CLOCK_GATE_ENABLE (1 << 0) > +#define GEN12_DOP_CLOCK_GATE_RENDER_ENABLE (1 << 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 a604bc7c0701..b957dec64eee 100644 > --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c > +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c > @@ -1489,6 +1489,11 @@ 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 -- Jani Nikula, Intel Open Source Graphics Center
