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<body><span class="vcard"><a class="email" href="mailto:krisman@collabora.co.uk" title="krisman@collabora.co.uk">krisman@collabora.co.uk</a>
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<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [BAT][BYT,BSW] WARN_ON(dev_priv->uncore.funcs.mmio_readl(dev_priv, (((const i915_reg_t){ .reg = (0x180000 + 0x650C) })), true) & (1 << 27))"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101517">bug 101517</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>NEW
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<td>ASSIGNED
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<td style="text-align:right;">Assignee</td>
<td>intel-gfx-bugs@lists.freedesktop.org
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<td>krisman@collabora.co.uk
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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [BAT][BYT,BSW] WARN_ON(dev_priv->uncore.funcs.mmio_readl(dev_priv, (((const i915_reg_t){ .reg = (0x180000 + 0x650C) })), true) & (1 << 27))"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101517#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [BAT][BYT,BSW] WARN_ON(dev_priv->uncore.funcs.mmio_readl(dev_priv, (((const i915_reg_t){ .reg = (0x180000 + 0x650C) })), true) & (1 << 27))"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101517">bug 101517</a>
from <span class="vcard"><a class="email" href="mailto:krisman@collabora.co.uk" title="krisman@collabora.co.uk">krisman@collabora.co.uk</a>
</span></b>
<pre>(In reply to Martin Peres from <a href="show_bug.cgi?id=101517#c5">comment #5</a>)
<span class="quote">> > The simple solution would be to just revert commit 63ff30442519 ("drm/i915:
> > Nuke the VLV/CHV PFI programming power domain workaround")
> >
> > I failed to consider that the firmware likes to reset the cdclk to some
> > non-minimum frequency during suspend, and then we apparently perform a
> > modeset without actually modesetting anything and thus only end up
> > reprogramming the cdclk without the power well being enabled.
>
> Let's do it then! Revert fast, rework carefully.</span >
Submitted to the ML:
<a href="https://lists.freedesktop.org/archives/intel-gfx/2017-June/131672.html">https://lists.freedesktop.org/archives/intel-gfx/2017-June/131672.html</a></pre>
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