Discussion:
[PATCH v6 09/18] ASoC: omap-hdmi-audio: Add platfrom device for OMAP HDMI audio support (Jyri Sarha)
Andrej Falout
2014-10-14 23:30:38 UTC
Permalink
Hi Jyri,

Is the audio support for OMAP HDMI supposed to support DSD audio?

Eg, on page 6 of http://elinux.org/images/8/8e/HDMI_ELC_mythripk.pdf

"Super Audio CD (DSD) support" starting from HDMI version 1.2

Thanks,

Andrej Falout
Jyri Sarha
2014-10-15 08:19:53 UTC
Permalink
Post by Andrej Falout
Hi Jyri,
Is the audio support for OMAP HDMI supposed to support DSD audio?
Eg, on page 6 of http://elinux.org/images/8/8e/HDMI_ELC_mythripk.pdf
"Super Audio CD (DSD) support" starting from HDMI version 1.2
Thanks,
Andrej Falout
The software support is only for PCM audio* ATM and AFAIK there is no
plans to add support any other formats in foreseeable future.

* 8 chnnel LPCM, 192 kHhz, 24 bit audio

Best regards,
Jyri
Andrej Falout
2014-10-15 08:26:31 UTC
Permalink
Thank you for you reply, Jyri,

Is there any reason, perhaps a hardware limitation, that would make this
impossible, or is this just by choice?

Eg. if I wanted to, could I implement DSD support on this platform?

Thanks,
Andrej Falout
Post by Jyri Sarha
Post by Andrej Falout
Hi Jyri,
Is the audio support for OMAP HDMI supposed to support DSD audio?
Eg, on page 6 of http://elinux.org/images/8/8e/HDMI_ELC_mythripk.pdf
"Super Audio CD (DSD) support" starting from HDMI version 1.2
Thanks,
Andrej Falout
The software support is only for PCM audio* ATM and AFAIK there is no
plans to add support any other formats in foreseeable future.
* 8 chnnel LPCM, 192 kHhz, 24 bit audio
Best regards,
Jyri
Jyri Sarha
2014-10-15 10:27:21 UTC
Permalink
Post by Andrej Falout
Thank you for you reply, Jyri,
Is there any reason, perhaps a hardware limitation, that would make this
impossible, or is this just by choice?
Eg. if I wanted to, could I implement DSD support on this platform?
Thanks,
Andrej Falout
After a brief look at the documentation it does not look like the
OMAP4/5 HDMI module could support anything else but PCM audio. It could
of course be that the documents I have only describe the use for PCM
audio, but in any case it would be an uphill battle as even the
documents I have are under NDA and I am not aware of any better
documents about the subject.

Best regards,
Jyri
Post by Andrej Falout
Hi Jyri,
Is the audio support for OMAP HDMI supposed to support DSD audio?
Eg, on page 6 of
http://elinux.org/images/8/8e/__HDMI_ELC_mythripk.pdf
<http://elinux.org/images/8/8e/HDMI_ELC_mythripk.pdf>
"Super Audio CD (DSD) support" starting from HDMI version 1.2
Thanks,
Andrej Falout
The software support is only for PCM audio* ATM and AFAIK there is
no plans to add support any other formats in foreseeable future.
* 8 chnnel LPCM, 192 kHhz, 24 bit audio
Best regards,
Jyri
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