Re: Audio support on OMAP 3430LDP or 4430SDP boards

[Liam Girdwood <lrg@ti.com>]

On Fri, 2012-04-27 at 19:45 +0530, Shilimkar, Santosh wrote:
> + Peter and Liam to comment
> 
> On Fri, Apr 27, 2012 at 7:28 PM, Russell King - ARM Linux
> <linux@arm.linux.org.uk> wrote:
> > Can someone please hint on what audio is supported on these two OMAP
> > boards?  From what I can tell, the answer is either "nothing" or "hdmi",
> > both of which are useless to me if someone wants me to convert the OMAP
> > ASoC driver to DMA engine.
> >
> > From what I can see on the 4430SDP, there's a 3.5mm headset jack,
> > microphones and speakers on the board, so the board does have audio
> > hardware.  However, it seems (as, I'm afraid to say, seems to be pretty
> > much standard practice with OMAP) there's a total lack of software
> > support in mainline.
> >
> > This kind'a prevents me testing changes to the DMA support for OMAP
> > ASoC...
> >
> > What can be done to remedy this situation?
> >

Peter now has has the final patches for Legacy mode (i.e. without ABE)
now upstream in 3.4-rc. Legacy mode gives a direct SDMA -> McPDM ->
twl6040 audio path so would be a good starting point for DMA testing.

Regards

Liam