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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [ICL] Trying to use non-existent 6th (F) DDI port"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108915">108915</a>
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<th>Summary</th>
<td>[ICL] Trying to use non-existent 6th (F) DDI port
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>imre.deak@intel.com
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<p>
<div>
<pre>Some ICL SKUs support only 5 DDI ports (2 combo-PHY and 3 MG PHY) instead of
the maximum of 6 ICL supports. We need a way to detect these SKUs based either
on VBT or the PCI ID and prevent using the non-existent port.
SKL-Y is one such system, where this problem results in the following error
whenever trying to use the non-existent port F:
<7>[ 10.710403] [drm:intel_power_well_enable [i915]] enabling AUX F
<4>[ 10.711756] ------------[ cut here ]------------
<4>[ 10.711760] WARN_ON(intel_wait_for_register(dev_priv, regs->driver, (0x1
<< ((pw_idx) * 2)), (0x1 << ((pw_idx) * 2)), 1))
One example:
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5234/fi-icl-y/boot0.log">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5234/fi-icl-y/boot0.log</a></pre>
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</p>
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