[alsa-devel] Lockups reading from i.MX51 SSI registers

Fabio Estevam festevam at gmail.com
Fri Aug 17 21:08:47 CEST 2012

On Fri, Aug 10, 2012 at 6:06 PM, Sascha Hauer <s.hauer at pengutronix.de> wrote:

> One clock is for the bus which must be turned on. The other is for the
> bitclock which we currently can ignore since we only support clock slave
> mode.
> On an i.MX5 ssi[123]_ipg_gate must be turned on by the ssi driver. From
> a quick look to the clock code it looks correct.

I tested audio playback on a mx51evk board last week using linux-next
and it worked fine (it has a sgtl5000).

I don't have any hardware with ac97 to try it.

Also, for the playback to work you need to install the SDMA firmware.


Fabio Estevam

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