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

[Ernesto Torres]

Im getting this output from muxing:

MUX: setup AF6_3430_MCBSP3_DX (0xd800216c): 0x0004 ->
0x0000
MUX: setup AE6_3430_MCBSP3_DR (0xd800216e): 0x0004 ->
0x0000
MUX: setup AF5_3430_MCBSP3_CLKX (0xd8002170): 0x0004 ->
0x0000
MUX: setup AE5_3430_MCBSP3_FSX (0xd8002172): 0x0004 -> 0x0000

Is this correct?

On Thu, Apr 2, 2009 at 11:27 AM, Ernesto Torres <skullmate at gmail.com> wrote:

> thank you, I'll try it and let you know how it went
>
> On Thu, Apr 2, 2009 at 10:56 AM, Jarkko Nikula <jhnikula at gmail.com> wrote:
>
>> 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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>>
>>
>
>
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> EhTd
>
>


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