[alsa-devel] Audio on omap3+twl4030 codec

[naveen krishna ch]

On Thu, Oct 23, 2008 at 2:34 PM, Jarkko Nikula <jarkko.nikula at nokia.com>wrote:

> On Wed, 22 Oct 2008 18:54:12 +0530
> "ext naveen krishna ch" <naveenkrishna.ch at gmail.com> wrote:
>
> > I forget to add one more observation
> > that is i have a older omap2 and twl4030 asoc codec driver and driver/ssi
> > mcbsp support in a 2.6.24 kernel.
> >
> > when i try to use this in my coustum board the audio is working fine all
> the
> > ways.
> >
> > > > I am wokring on 2.6.26 whre the support was not there for omap3
> mcbsp.
> > > > so i ported some stuff from the 2.6.27 latest git tree and now audio
> is
> > > > working on omap3 evm.
> > > > with the very same kernel when i try with my custom board. I am
> unable to
> > > > hear audoi.
> > >
> So to summarize:
>
> - 2.6.26 + backported drivers on OMAP3 EVM -> audio works
> - 2.6.26 + backported drivers on custom board with NAND boot -> no audio
> - 2.6.26 + backported drivers on custom board with MMC boot -> audio
>  works
> - 2.6.24 (TI SDP release?) on custom board -> audio works
>
> And I understood also that bootloader images were the same in all of
> these cases. Did I get these correctly?
>
Yeah till here u got every thing correctly.

>
> Is the rootfile system the same between these cases? I.e. that same
> mixer settings like audio volumes etc. are used?

i Have used the same root file system also that too over nfs all the cases.


>
>
> > Can anyone refer me towards the ones who worked on this kind of audio
> codec
> > driver.
> >
> Worth to ask also on linux-omap mailing list
> (linux-omap at vger.kernel.org) since TI engineers are reading it.
>
>
> Jarkko
>



-- 
Thanks,
Neyo