[alsa-devel] [PATCH 00/19][RFC v2] ALSA: firewire-motu: new driver for MOTU FireWire series

Takashi Sakamoto o-takashi at sakamocchi.jp
Mon Jan 30 04:09:20 CET 2017


On Jan 29 2017 22:22, Jonathan Woithe wrote:
> On Sun, Jan 29, 2017 at 12:53:58PM +0900, Takashi Sakamoto wrote:
>> However, this module cannot handle 828 correctly to generate sound. The
>> reason is not clear yet.
>
> There is something odd about the 828 - I have observed this with FFADO.
> While capture works fine, playback remains resolutely muted.

Not resolutely. With this module, in the beginning of packet streaming, 
the unit can generate sound for quite a short period.

Currently I have a hypothesis that this issue comes from missing 
synchronization on a path between PDI 1394L21BE and QuickLogic DA828FW. 
As the name implies, the latter IC is designed by S&S research Inc. just 
for this unit, and there's less information.

Don't behave with your over-generalization, if being a reasonable person.


Regards

Takashi Sakamoto


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