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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Issue of CPU usage with HiFiBerry driver snd_soc_hifiberry_amp with Debian Wheezy kernel 3.12.28"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84585#c101">Comment # 101</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Issue of CPU usage with HiFiBerry driver snd_soc_hifiberry_amp with Debian Wheezy kernel 3.12.28"
href="https://bugs.freedesktop.org/show_bug.cgi?id=84585">bug 84585</a>
from <span class="vcard"><a class="email" href="mailto:superquad.vortex2@gmail.com" title="Raymond <superquad.vortex2@gmail.com>"> <span class="fn">Raymond</span></a>
</span></b>
<pre>try
aplay -v -D hw:0,0 --dump-hwparams --period-time=10000 any44100hzstereo.wav
you need to ask Florian (author of bcm2835_i2s.c)
1) .periods_min * .period_bytes_min or .buffer_bytes_min seem less than the
size of fifo
2) are there any timeout loop which cause hwptr remain unchanged for more than
9ms ?</pre>
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