[Bug 101900] No HDMI HBR audio on Polaris (no TrueHD, no Atmos, no Neo:X, no HD Master audio) and static noise in sound when LPCM

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Comment # 23 on bug 101900 from
(In reply to lethalwp from comment #22)
> Thank you for the printks.
> 
> If the code is only ran at initialization of gpu:
> 
> could this explain the lpcm noise issue?: The reserved bandwidth at gpu init
> isn't enough anymore when video+more audio comes through?

The audio configuration only needs to run once per modeset.  It basically just 
forwards the display info to the audio device and tells the audio device what
it can support given the current display mode and enables the audio stream
within the display stream.  At that point, the display device is just a conduit
for the audio device.


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