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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL-U] System hang when plug in a VGA monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91791#c28">Comment # 28</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL-U] System hang when plug in a VGA monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91791">bug 91791</a>
from <span class="vcard"><a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> <span class="fn">Ville Syrjala</span></a>
</span></b>
<pre>(In reply to Gary Wang from <a href="show_bug.cgi?id=91791#c27">comment #27</a>)
<span class="quote">> Hi Jim,
>
> It seems to be necessary adding DDI PLL mapping in intel_mst_pre_enable_dp
> method (please refer
> <a href="http://lxr.free-electrons.com/source/drivers/gpu/drm/i915/intel_dp_mst">http://lxr.free-electrons.com/source/drivers/gpu/drm/i915/intel_dp_mst</a>.
> c#L188).
> But it still got failed after I wrote DPLL_CTRL2 with corresponding port for
> it, and need to check it in related spec further, upset.</span >
I tried to fix something along those lines for SKL:
<a href="http://lists.freedesktop.org/archives/intel-gfx/2015-August/073965.html">http://lists.freedesktop.org/archives/intel-gfx/2015-August/073965.html</a></pre>
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