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<body><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> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [ivb] Unable to configure 3rd pipe (e.g. LVDS + DP + DP)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89661">bug 89661</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>ASSIGNED
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<td>NEEDINFO
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [ivb] Unable to configure 3rd pipe (e.g. LVDS + DP + DP)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89661#c26">Comment # 26</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [ivb] Unable to configure 3rd pipe (e.g. LVDS + DP + DP)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89661">bug 89661</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 Ville Syrjala from <a href="show_bug.cgi?id=89661#c25">comment #25</a>)
<span class="quote">> The problem is that we may end up using 1.62 link rate for one DP port, and
> 2.7 for the other DP port, leaving no free DPLLs for the non-DP port.
>
> Fixing this requires that we'd consider the failure to find a DPLL as a
> reason to retry in the bw_constrained mode (or some similar mode) and made
> the DP link rate selection try to pick a common rate for all ports.</span >
I was a bit bored the other day and decided to see if I could hack this thing
up. Didn't turn out to be too painful. I've not really tested it myself since I
don't have an IVB with two DP ports. But at least it didn't seem to explode too
badly when I tried it with a machine that has one DP port.
git://github.com/vsyrjala/linux.git ivb_bifurcation_atomic_9
I'd be interested to know if it actually works.</pre>
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