<html>
    <head>
      <base href="https://bugs.freedesktop.org/" />
    </head>
    <body>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [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#c33">Comment # 33</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [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 am suspecing the voltage change after GPU frequencey request.

Can we try below options.
1. Keep the frquency at min (RPn) & run the workload. This will ensure we run
at contant GPU voltage.
a) cat /sys/class/drm/card0/gt_RPn_freq_mhz
b) echo "value from above cmd" >/sys/class/drm/card0/gt_max_freq_mhz

2) Switch back to legacy turbo. 
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);</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the QA Contact for the bug.</li>
          <li>You are on the CC list for the bug.</li>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>