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<body><span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BYT Regression]igt/drv_suspend/fence-restore-tiled2untiled fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=72334">bug 72334</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>NEEDINFO
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<td>NEW
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BYT Regression]igt/drv_suspend/fence-restore-tiled2untiled fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=72334#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BYT Regression]igt/drv_suspend/fence-restore-tiled2untiled fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=72334">bug 72334</a>
from <span class="vcard"><a class="email" href="mailto:huax.lu@intel.com" title="lu hua <huax.lu@intel.com>"> <span class="fn">lu hua</span></a>
</span></b>
<pre>Bisect shows:f69e515699d8e9b1c25dcfe1c4c6f435087495d2 is the first bad commit
commit f69e515699d8e9b1c25dcfe1c4c6f435087495d2
Author: Duncan Laurie <<a href="mailto:dlaurie@chromium.org">dlaurie@chromium.org</a>>
Date: Wed Nov 13 17:59:43 2013 -0800
i915: Use 120MHz LVDS SSC clock for gen5/gen6/gen7
We had been using a DMI table workaround to select the right
frequency for devices, but this is fragile and must be updated
with every new platform.
Instead the default case when VBT is missing is changed to use
120MHz clock for LVDS SSC for these generations.
The docs for 2010-Core, SandyBridge, and IvyBridge all indicate
that the reference frequency for LVDS is 120MHz:
"2010 Core"
<a href="http://intellinuxgraphics.org/IHD_OS_Vol3_Part3r2.pdf">http://intellinuxgraphics.org/IHD_OS_Vol3_Part3r2.pdf</a>
page 38
Reference Frequency: 120MHz for CRT and LVDS. 100MHz for the FDI.
"2011 SandyBridge"
<a href="http://intellinuxgraphics.org/documentation/SNB/IHD_OS_Vol3_Part3.pdf">http://intellinuxgraphics.org/documentation/SNB/IHD_OS_Vol3_Part3.pdf</a>
page 33
Reference Frequency: 120MHz for CRT, HDMI, LVDS. 100MHz for the FDI.
"2012 IvyBridge"
<a href="http://intellinuxgraphics.org/documentation/IVB/IHD_OS_Vol3_Part4.pdf">http://intellinuxgraphics.org/documentation/IVB/IHD_OS_Vol3_Part4.pdf</a>
page 27
Reference Frequency: 120 MHz for CRT, HDMI, LVDS, 100MHz for the FDI.
Signed-off-by: Duncan Laurie <<a href="mailto:dlaurie@chromium.org">dlaurie@chromium.org</a>>
[olof: Fixup for recent base, switched from if/else to single call]
Signed-off-by: Olof Johansson <<a href="mailto:olof@lixom.net">olof@lixom.net</a>>
Reviewed-by: Rodrigo Vivi <<a href="mailto:rodrigo.vivi@gmail.com">rodrigo.vivi@gmail.com</a>>
Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>></pre>
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