[AudioI] Audioinjector Stereo on Radxa Rockpi4(b) - RK3399 Device with Vendor and Mainline Kernel
Matt
matt at audioinjector.net
Tue Jun 2 06:22:54 UTC 2020
On 2/6/20 12:11 pm, Steffen Heilmann wrote:
> mh ... okay perhaps you could first tell where i can find information
> about this function?!
>
> i´m guessing this is needed and the correct implementation would
> prefend the error while booting :
> [ 8.545985] audioinjector-stereo sound-ext-card: ASoC: CODEC DAI
> wm8731-hifi not registered
This means that the kernel can't find the codec in the set of known
devices.
Have you checked for the wm8731 ko driver in the /lib/kernel/modules...
directory ? Have you checked that your device tree is loading ? The
device tree is meant to load the wm8731 codec driver.
If the device tree is loading, then you may need to tell the kernel that
new devices are available. Normally :
depmod -a
The depmod command will rebuild the modules.dep and map files.
>
> how can i help you helping me ;) what information about the device do
> you need?
>
>
Lets keep working through this together.
Matt
> Mit freundlichen Grüßen - King regards
> /Steffen Heilmann/
>
>
> Am Di., 2. Juni 2020 um 02:03 Uhr schrieb Matt <matt at audioinjector.net
> <mailto:matt at audioinjector.net>>:
>
> Great, I can see your commits here :
>
> https://github.com/verplant23/kernel/commit/449f587e3b866a2e9a119bf0669848c28d7e6eaa
>
> I think you will want to alter a few things. Lets start with the
> ALSA machine driver.
>
> First of all your probe looks very different to a probe from a
> different machine driver in the same directory. Compare your probe
> function :
>
> https://github.com/verplant23/kernel/commit/449f587e3b866a2e9a119bf0669848c28d7e6eaa#diff-b3c2442cf442954b73d64863b0a76f42R151
>
> To an assumed working probe function :
>
> https://github.com/verplant23/kernel/blob/release-4.4-rockpi4/sound/soc/rockchip/rockchip_rt5651_tc358749x.c#L187
>
> You will want to copy their approach to setting the
> platform_of_node and the cpu_of_node.
>
> Next, in their snd_soc_dai_link structure, they don't have the
> cpu_dai_name nor the platform_name. Compare yours :
>
> https://github.com/verplant23/kernel/commit/449f587e3b866a2e9a119bf0669848c28d7e6eaa#diff-b3c2442cf442954b73d64863b0a76f42R103
>
> with theirs :
>
> https://github.com/verplant23/kernel/blob/release-4.4-rockpi4/sound/soc/rockchip/rockchip_rt5651_tc358749x.c#L148
>
> Theirs is more complex because they have various links, we have
> only one. However you can see in their "DAILINK_RT5651_HIFI" link,
> there is no cpu_dai_name nor platform_name.
>
>
> That is a start.
>
> If you can alter that and link us with their device tree for
> comparison with yours that would also be helpful.
>
>
> Matt
> On 2/6/20 9:08 am, Steffen Heilmann wrote:
>> never used git ...but here you go
>> https://github.com/verplant23/kernel
>>
>>
>> Mit freundlichen Grüßen - King regards
>> /Steffen Heilmann/
>>
>>
>> Am Mo., 1. Juni 2020 um 23:17 Uhr schrieb Matt via People
>> <people at lists.audioinjector.net
>> <mailto:people at lists.audioinjector.net>>:
>>
>> Hey this sounds great!
>>
>> To make this easier, you will probably want to fork the
>> https://github.com/radxa/kernel.git repo to your own github
>> account. You can then clone that repo. You can then also push
>> your changes back to your fork of that repo.
>>
>> After that, the easiest way to understand what you have done
>> is to link us to the changes on github. Once you get to this
>> stage, we can also pull your version of the kernel and build it.
>>
>> I am happy to build what you produce and test is compiles,
>> however I can't test it on the hardware because I don't have any.
>>
>> Matt
>>
>> On 2/6/20 6:45 am, Steffen Heilmann via People wrote:
>>> Hello Guys
>>> i managed to get the wm8731 ai stereo to work with the radxa
>>> rk3399 rockpi 4(b).
>>> the steps are basicly the same for the Mainline Kernel and
>>> the vendor version which is 4.4.154.
>>>
>>> i´m not a coder or kernel guy. and i don´t say this is the
>>> perfect way i did it. i do not even know everything i
>>> changed is necessary.
>>>
>>> so perhaps there are some guys out there who will also post
>>> their ideas or help make everything " how a code should be
>>> implemented."
>>>
>>> The hardware pinout on the rockpi4 is announced to be the
>>> same pinout as the rpi this is why i choose the device. you
>>> can hook up the device without burning something.
>>>
>>> the steps are the nearly the same for both kernel versions.
>>> but for mainline you have to choose the mainline
>>> audioinjector code from rpi source. i also used the armbian
>>> dev build environment making everythin easier.
>>>
>>> This is the vendor wiki and the steps describe how to build
>>> the vendor kernel
>>> https://wiki.radxa.com/Rockpi4/dev/kernel-4.4
>>>
>>> 1- Start with "Get the kernel source" and clone/ download
>>> the source from github
>>> 2- cd to the directory "
>>> /arch/arm64/boot/dts/rockchip/overlays-rockpi4/ " and add
>>> " audioinjector-wm8731-audio.dtbo \ " as line 16 the the
>>> Makefile.
>>> it should look like:
>>> / .../
>>> /hifiberry-dacplus.dtbo \
>>> audioinjector-wm8731-audio.dtbo \
>>> raspberrypi-7-inch-lcd.dtbo \
>>> /
>>> /.../
>>>
>>> 3- in the same directory add the file
>>> "audioinjector-wm8731-audio-overlay.dts"
>>> (the attachment i made )
>>> 4- in the same directory add the following to the
>>> hw_intfc.conf :
>>> /#audioinjector-wm8731-audio on I2C7. Need set: intfc:i2c7=on
>>> #intfc:dtoverlay=audioinjector-wm8731-audio/
>>>
>>> 5- cd to the directory /sound/soc/rockchip/ an add the
>>> following to the Kconfig file :
>>> /config SND_AUDIOINJECTOR_PI_SOUNDCARD
>>> tristate "Support for audioinjector.net
>>> <http://audioinjector.net> Pi add on soundcard"
>>> select SND_SOC_WM8731
>>> help
>>> Say Y or M if you want to add support for
>>> audioinjector.net <http://audioinjector.net> Pi Hat/
>>>
>>> 6- in the same directory inside the Makefile add to line 36
>>> /snd-soc-audioinjector-pi-soundcard-objs :=
>>> audioinjector-pi-soundcard.o/
>>> and after the last line add
>>> /obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) +=
>>> snd-soc-audioinjector-pi-soundcard.o/
>>>
>>> 7- to the same directory add this file
>>> /audioinjector-pi-soundcard.c / from attachment (original
>>> from raspi source
>>> https://github.com/raspberrypi/linux/blob/rpi-4.19.y/sound/soc/bcm/audioinjector-pi-soundcard.c
>>> )
>>> the changes to audioinjector-pi-soundcard.c file belongs to
>>> the i2c code and to the bclk_ratio inside hw_params
>>> look inside the file i attached and compare with source
>>>
>>> 8- follow up the vendors guide to build the kernel and to
>>> additional steps with "make menuconfig"
>>>
>>> and check settings selected
>>> /Device Drivers -> Sound card support -> Advanced Linux
>>> Sound Architecture -> ALSA for SoC audio support -> *Support
>>> for audioinjector.net <http://audioinjector.net> Pi add on
>>> soundcard*/
>>>
>>> also unselect following because for me did some error while
>>> compiling :
>>> /Device Drivers -> Sound card support -> Advanced Linux
>>> Sound Architecture -> ALSA for SoC audio support -> CODEC
>>> driver -> *Rockchip RK3308 CODEC*/
>>> and
>>> /Device Drivers -> Sound card support -> Advanced Linux
>>> Sound Architecture -> ALSA for SoC audio support -> CODEC
>>> driver -> *RK3328 CODEC*/
>>>
>>> 9- for example follow the guide building the *.deb packages
>>> and install them.
>>>
>>> 10- booting up should now show the audioinjector stereo
>>> device. don´t care about the errors as long as u get from
>>> dmesg : /audioinjector-stereo sound-ext-card: wm8731-hifi
>>> <-> ff890000.i2s mapping ok/
>>>
>>> 11- follow
>>> https://www.alsa-project.org/wiki/Setting_the_default_device to
>>> select your default device
>>> and reboot again
>>>
>>> don´t forget to unmute the device inside alsamixer
>>>
>>> Sorry for my bad english and have fun with your
>>> audioinjector stereo on rk3399
>>>
>>> Mit freundlichen Grüßen - King regards
>>> /Steffen Heilmann/
>>>
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