[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

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101900

--- Comment #20 from Alex Deucher <alexdeucher at gmail.com> ---
Everything looks like it's implemented properly in the code to enable HBR
audio.  Take a look at:
drivers/gpu/drm/amd/display/dc/dce/dce_audio.c for audio configuration
drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c for display stream
infoframes

Can you add some debugging output to dce_aud_az_configure() to see why it may
not be getting enabled in your case?  Specifically see if
is_audio_format_supported() is failing for HBR formats and why and see if
set_high_bit_rate_capable() is getting enabled.

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