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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [bisected BYT] complete freeze after: drm/i915/vlv: WA for Turbo and RC6 to work together"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88012#c71">Comment # 71</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [bisected BYT] complete freeze after: drm/i915/vlv: WA for Turbo and RC6 to work together"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88012">bug 88012</a>
from <span class="vcard"><a class="email" href="mailto:deepak.s@intel.com" title="Deepak S <deepak.s@intel.com>"> <span class="fn">Deepak S</span></a>
</span></b>
<pre>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</pre>
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