sure!
http://eewiki.net/display/linuxonarm/BeagleBone+Black



2014-06-04 21:04 GMT+04:00 Tristan Phillips <[email protected]>:

> Is there a dummies guide to replacing a kernel on a BBB built with a
> flasher with a new one?
>
>
> On Tuesday, 3 June 2014 17:58:20 UTC+1, lisarden wrote:
>
>> I think you just need to recompile the kernel with the code provided.
>> Then you use alsamixer to tell which device captures sounds
>>
>>
>> 2014-06-03 20:51 GMT+04:00 Tristan Phillips <[email protected]>:
>>
>> Thank you, does that mean I need a device tree overlay that tells the
>>> driver I'm using a mic as well as line in?
>>>
>>> Will I need to recompile the kernel to apply this patch?
>>>
>>>
>>> On Tuesday, 3 June 2014 17:48:15 UTC+1, lisarden wrote:
>>>
>>>> Hi!
>>>>
>>>> diff --git a/sound/soc/davinci/davinci-evm.c 
>>>> b/sound/soc/davinci/davinci-evm.c
>>>> index 7ad7b37..e196aa5 100644
>>>> --- a/sound/soc/davinci/davinci-evm.c
>>>> +++ b/sound/soc/davinci/davinci-evm.c
>>>> @@ -117,15 +117,13 @@ static const struct snd_soc_dapm_route audio_map[] = 
>>>> {
>>>>    {"Line Out", NULL, "RLOUT"},
>>>>
>>>>    /* Mic connected to (MIC3L | MIC3R) */
>>>> -  {"MIC3L", NULL, "Mic Bias 2V"},
>>>> -  {"MIC3R", NULL, "Mic Bias 2V"},
>>>> -  {"Mic Bias 2V", NULL, "Mic Jack"},
>>>> +  {"LINE2L", NULL, "Mic Bias 2.5V"},
>>>> +  {"LINE2R", NULL, "Mic Bias 2.5V"},
>>>> +  {"Mic Bias 2.5V", NULL, "Mic Jack"},
>>>>
>>>>    /* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
>>>>    {"LINE1L", NULL, "Line In"},
>>>> -  {"LINE2L", NULL, "Line In"},
>>>>    {"LINE1R", NULL, "Line In"},
>>>> -  {"LINE2R", NULL, "Line In"},
>>>>  };
>>>>
>>>>
>>>>
>>>>
>>>> 2014-06-03 20:14 GMT+04:00 Tristan Phillips <[email protected]>:
>>>>
>>>>>
>>>>> Hi,
>>>>>
>>>>> I'm wondering how I can set the mic bias voltage level on the Audio
>>>>> Cape, it is currently off and I cannot get my mic to work.  Can I do this
>>>>> via alsa or something similar?
>>>>>
>>>>> Thank you,
>>>>>
>>>>> Tris
>>>>>
>>>>> --
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>>>>>
>>>>
>>>>
>>>>
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>>
>>
>>
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