On Mon, 12 Jan 2015, Rodrigo Vivi <[email protected]> wrote: > This reverts commit 5a0afd4b78ec23f27f5d486ac3d102c2e8d66bd7. > > Although timeout mode allows higher residency it impact badly on performance. > I believe while we don't have a way to balance between performance and > power savings at runtime I believe we have to revert and prioritize > performance that was impacted a lot. > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88103
The bug points at [1] as a potential fix. BR, Jani. [1] http://mid.gmane.org/[email protected] > > Cc: Deepak S <[email protected]> > Cc: Wendy Wang <[email protected]> > Cc: Jani Nikula <[email protected]> > Signed-off-by: Rodrigo Vivi <[email protected]> > --- > drivers/gpu/drm/i915/intel_pm.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c > index 20a6dfa..03fc7f2 100644 > --- a/drivers/gpu/drm/i915/intel_pm.c > +++ b/drivers/gpu/drm/i915/intel_pm.c > @@ -4681,8 +4681,7 @@ static void cherryview_enable_rps(struct drm_device > *dev) > I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10); > I915_WRITE(GEN6_RC_SLEEP, 0); > > - /* TO threshold set to 1750 us ( 0x557 * 1.28 us) */ > - I915_WRITE(GEN6_RC6_THRESHOLD, 0x557); > + I915_WRITE(GEN6_RC6_THRESHOLD, 50000); /* 50/125ms per EI */ > > /* allows RC6 residency counter to work */ > I915_WRITE(VLV_COUNTER_CONTROL, > @@ -4696,7 +4695,7 @@ static void cherryview_enable_rps(struct drm_device > *dev) > /* 3: Enable RC6 */ > if ((intel_enable_rc6(dev) & INTEL_RC6_ENABLE) && > (pcbr >> VLV_PCBR_ADDR_SHIFT)) > - rc6_mode = GEN7_RC_CTL_TO_MODE; > + rc6_mode = GEN6_RC_CTL_EI_MODE(1); > > I915_WRITE(GEN6_RC_CONTROL, rc6_mode); > > -- > 1.9.3 > -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
