Re: [alsa-devel] [PATCH v6 09/18] ASoC: omap-hdmi-audio: Add platfrom device for OMAP HDMI audio support (Jyri Sarha)

On 10/15/2014 11:26 AM, Andrej Falout wrote:

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

On Wed, Oct 15, 2014 at 9:19 PM, Jyri Sarha <jsarha@ti.com mailto:jsarha@ti.com> wrote:

On 10/15/2014 02:30 AM, Andrej Falout wrote:

    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