Audio issue on Kirkwood t5325: no sound

Russell King - ARM Linux linux at
Thu Jul 18 17:23:50 EDT 2013

On Thu, Jul 18, 2013 at 10:15:21PM +0100, Mark Brown wrote:
> On Thu, Jul 18, 2013 at 10:06:37PM +0100, Mark Brown wrote:
> > All those "Off" things mean that things are powered off which tends not
> > to involve them making any noise...  Russell mentioned that he thought
> > this was a lack of DAPM stuff however looking here it seems there are
> > some DAPM widgets on your board?
> And now I think about it further the fix here is essentially that we
> require DAPM on any device that wants power management these days - DAIs
> are now widget based so it's going to be much more sensible to just go
> through and add the relevant output pins to relevant legacy drivers.
> This means that for uda134x (which I think is what you're using here, I

No, this report is against ALC5623, which does appear to have widgets.
I was remarking that this looks like the same kind of issue I had with

Note that the report indicates that the bias setting remains off while
playing, and ALC5623 does this:

        case SND_SOC_BIAS_OFF:
                /* everything off, dac mute, inactive */
                snd_soc_write(codec, ALC5623_PWR_MANAG_ADD2, 0);
                snd_soc_write(codec, ALC5623_PWR_MANAG_ADD3, 0);
                snd_soc_write(codec, ALC5623_PWR_MANAG_ADD1, 0);

So if everything on the codec is powered down, it's not surprising that
there is no audio output.

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