On Wed, Apr 1, 2009 at 9:29 PM, Ernesto Torres <skullmate@xxxxxxxxx> wrote: > I'm currently working in adding an external codec to the beagleboard, so > far > the i2c control part is functional, now i want to use mcbsp3 to provide i2s > transfers > > Is there any way to test the mcbsp to validate the connection? > > Also, I've done little modifications to the omap3beagle.c to change from > mcbsp2 to mcbsp3, can someone validate this is correct? > > In: > static int __init omap3beagle_soc_init(void) > > I changed to: > *(unsigned int *)omap3beagle_dai.cpu_dai->private_data = 2; /* McBSP3 */ > > It was: > *(unsigned int *)omap3beagle_dai.cpu_dai->private_data = 1; /* McBSP2 */ > > Is this correct? Or it should be changed in other places too? > > It is basically enough as well as setting correct DAI and clocking configuration (if needed) in omap3beagle_hw_params. 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. Jarkko _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
