Hi,
I have been lurking about these boards asking a few questions about
beaglebone. Off and on when I have time I am evaluating the beaglebone for
a low latency audio application.
I am using the 4.4.20-ti-r44 build at the moment, in a previous post I have
swapped using RPMsg for the older uio_pruss library which was more flexible
for my needs. Thanks to a lot of help on the board I managed to get the
PRUs loaded and running.
The next thing I want to try is to get the TLV320AIC3204 codec working with
the beaglebone black. Looking at the forums there is a lot to do.
1) Build a kernel module driver, install on target machine under
/lib/modules/(kernel name)/kernel/sound.soc.codecs
2) Look at the dts and disable hdmi support
3) Then start adding alsa support into the dts for pins, i2c config, links
to alsa , etc.
Unfortunately I am stuck at 1 8-(. Being a newbie I am not quie sure what
to do.
It looks like there is a driver for it:
KERNEL/sound <http://lxr.free-electrons.com/source/sound/>/soc
<http://lxr.free-electrons.com/source/sound/soc/>/codecs
<http://lxr.free-electrons.com/source/sound/soc/codecs/>/tlv320aic32x4.c
<http://lxr.free-electrons.com/source/sound/soc/codecs/tlv320aic32x4.c>
The current kernel has support for snd-soc-tlv320aic31xx.ko, and
snd-soc-tlv320aic32032x4.ko. I want to add snd-soc-tlv320aic32x4.ko,
So I cloned the bb kernel. git clone
https://github.com/RobertCNelson/bb-kernel , and tried to build
./build_kernel I hoped I could run make menuconfig and enable it but it
is not an option.
So some question if anyone can help.
1) There is no branch for 4.4.20-ti-r44 so I am a bit confused. It might be
obvious to guys with experience why but I don;t understand, am I looking at
the wrong repository. It looks like this repository is the main one for
beaglebone.
2) So I went for the current release branch at 4.4 just to get started.
Started the build and when the menu config came up there was no option to
select tlv320aic32032x4. So I looked at the Kconfig , and makefile in the
/sound.soc/codecs directory and the file exists, there is an option in the
makefile to build if the config is selected. The KConfig looks like it is
not selected. I tried to add an option in Kconfig and rebuild using
./build_kernel but it looks like it overwrites my Kconfig when it patches
the bbb patch onto 4.4.
3) Can anyone help, Is there a way just to build the code without calling
the patch update ? Also can I add the configuration option into the menu,
I know this is probably basic.
Thanks for any replies,
Paul
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