[alsa-devel] how to use mcbsp for i2s?

[Jarkko Nikula]

On Thu, 2 Apr 2009 13:20:36 +0300
Jarkko Nikula <jhnikula at gmail.com> wrote:

> > Grrr... cannot find the hack, I'm too keen to delete temporary
> > hacks. I was
> pretty sure I had
> it somewhere.
> 
> Basically it was adding necessary pin multiplexing configuration into
> arch/arm/plat-omap/include/mach/mux.h and arch/arm/mach-omap2/mux.c
> and then using omap_cfg_reg(...) in omap3beagle.c to change pin
> configuration from
> GPIOs to McBPS[1 | 3] pins.
> 
Yes, I found it. Hack attached :-)

Now I don't have here Beagle to test but hack still applies on top of
linux-omap. Then you will need CONFIG_OMAP_MUX=y and following lines
into omap3beagle.c or board-omap3beagle.c.

omap_cfg_reg(AF6_3430_MCBSP3_DX);
omap_cfg_reg(AE6_3430_MCBSP3_DR);
omap_cfg_reg(AF5_3430_MCBSP3_CLKX);
omap_cfg_reg(AE5_3430_MCBSP3_FSX);


Jarkko
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