<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body><span class="vcard"><a class="email" href="mailto:anisse@astier.eu" title="Anisse Astier <anisse@astier.eu>"> <span class="fn">Anisse Astier</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [Braswell] HDMI output not working on Insyde laptop board"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97390">bug 97390</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Attachment #125868 is obsolete</td>
<td>
</td>
<td>1
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Braswell] HDMI output not working on Insyde laptop board"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97390#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [Braswell] HDMI output not working on Insyde laptop board"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97390">bug 97390</a>
from <span class="vcard"><a class="email" href="mailto:anisse@astier.eu" title="Anisse Astier <anisse@astier.eu>"> <span class="fn">Anisse Astier</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=126098" name="attach_126098" title="Patch to make the HDMI output work">attachment 126098</a> <a href="attachment.cgi?id=126098&action=edit" title="Patch to make the HDMI output work">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=97390&attachment=126098'>[review]</a>
Patch to make the HDMI output work
With the attached patch the HDMI output now works.
So on this Insyde board, the HDMI is on PORTC, but the i2c uses gmbus
pin 5, which should be for PORTB. Which is why we can get the EDID if we
force-enable PORTB, but not the output.
With this patch PORTC will use gmbus pin 5, allowing the driver to get
the EDID. It's obviously just a hack/PoC.
Skylake has some information in the VBT to provide an alternate ddc pin,
but I don't know if Braswell/Cherryview has the same information. To be
continued...</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
<li>You are the QA Contact for the bug.</li>
</ul>
</body>
</html>