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

2 Apr 2009


      On Thu, Apr 2, 2009 at 10:48 AM, Jarkko Nikula jhnikula@gmail.com wrote:
...
But by default McBSP1 and 3 which available in Beale pin header are muxed
to GPIO
so you need to mux those pins for McBSP by the bootloader and with
linux-omap
kernel multiplexing support.
I may have a hack patch somewhere... I'll try to find it and post it here
for reference.
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.
Jarkko