[Bug 88012] [bisected BYT] complete freeze after: drm/i915/vlv: WA for Turbo and RC6 to work together

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88012

--- Comment #71 from Deepak S <deepak.s at intel.com> ---
Hi Jesse,

I thought improved rps patches from Chris helped us to resolve the issue.

Can enable the legacy turbo back and see if it helps?
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 9baecb7..0dac413 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -4292,12 +4292,7 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
        INIT_WORK(&dev_priv->rps.work, gen6_pm_rps_work);
        INIT_WORK(&dev_priv->l3_parity.error_work, ivybridge_parity_work);

-       /* Let's track the enabled rps events */
-       if (IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv))
-               /* WaGsvRC0ResidencyMethod:vlv */
-               dev_priv->pm_rps_events = GEN6_PM_RP_UP_EI_EXPIRED;
-       else
-               dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;
+       dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;

        INIT_DELAYED_WORK(&dev_priv->gpu_error.hangcheck_work,
                          i915_hangcheck_elapsed);


based on the comments looks like we are hitting the issue after enabling
aggressive downclocking. I will check the patch again to see if we can
potential fix. 

8fb55197e64d5988ec57b54e973daeea72c3f2ff
drm/i915: Agressive downclocking on Baytrail


Thanks
Deepak

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20150729/b40e234f/attachment.html>