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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW HDMI] Audio with 44.1 khz not working when 1920x1080p screen refreshrate > 30hz"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97442#c31">Comment # 31</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW HDMI] Audio with 44.1 khz not working when 1920x1080p screen refreshrate > 30hz"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97442">bug 97442</a>
from <span class="vcard"><a class="email" href="mailto:libin.yang@intel.com" title="Libin Yang <libin.yang@intel.com>"> <span class="fn">Libin Yang</span></a>
</span></b>
<pre>(In reply to Mark Wilczynski from <a href="show_bug.cgi?id=97442#c30">comment #30</a>)
<span class="quote">> (In reply to Jani Nikula from <a href="show_bug.cgi?id=97442#c29">comment #29</a>)
> > See also <a href="https://patchwork.freedesktop.org/series/11252/">https://patchwork.freedesktop.org/series/11252/</a>
>
> That patch is similar to my solution. It just needs to be expanded to deal
> with a couple high-clock 1920x1080p modes instead of just 4K resolutions.
>
> The incorrect TMDS clock for <a href="mailto:1920x1080@59.940">1920x1080@59.940</a> is an unrelated bug but should
> be addressed as well because it may affect the selection of proper N values
> required to fix 44.1 kHz audio.
>
> BTW, the CTS (or M) values in my patched table are not correct. I didn't
> fill those in because the code didn't use them for HDMI. Only the N value
> is used.</span >
Yes, we didn't use CTS for HDMI. We found if N is set correctly, HW can handle
it automatically. To reduce the bugs introduced by sw, we skipped setting the
CTS value. However we set the M value for DP now.
For this bug, I'm thinking whether we need calculate the n/cts/m value
automatically instead of using the table as the clock may vary with mode?
Regards,
Libin</pre>
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