Audio Support Rock Pi S

#83

The Rock Pi S has been in limbo for so long and received so many revisions it now gives more bad representation than sales at a guess.
Its such as shame as the S in being sound and audio had such great potential but for some reason the ADC decoupling caps where omitted on board.
Adding them after post gpio and not at Soc pin source is too late as all the board interference will be present and why they should be placed at pin source.

Likely it needs a rethink or maybe just EOL as the rk3308 wasn’t the fastest either due to memory implementation and the reduced clock speeds.

#84

Hi everyone!

I have installed Armbian_23.8.1_Rockpi-s_bookworm_current_6.1.50
How to enable LINEOUT and MIC pins for analog audio?

#85

Hi again!

Todays update:

Output audio from LINEOUT pins works fine with speaker-test!

What about the MIC pins for audio input?
To begin with I have tried to use the arecord command with these error messages…?

TEST 1

root@rockpi-s:~# arecord -f S16_LE -d 10 -r 16000 --device=“hw:0,0” test-mic.wav
Recording WAVE ‘test-mic.wav’ : Signed 16 bit Little Endian, Rate 16000 Hz, Mono
arecord: set_params:1358: Channels count non available

TEST 2

root@rockpi-s:~# arecord -f S16_LE -c 2 -d 10 -r 16000 --device=“hw:0,0” test-mic.wav
Recording WAVE ‘test-mic.wav’ : Signed 16 bit Little Endian, Rate 16000 Hz, Stereo
arecord: set_params:1416: Unable to install hw params:
ACCESS: RW_INTERLEAVED
FORMAT: S16_LE
SUBFORMAT: STD
SAMPLE_BITS: 16
FRAME_BITS: 32
CHANNELS: 2
RATE: 16000
PERIOD_TIME: 125000
PERIOD_SIZE: 2000
PERIOD_BYTES: 8000
PERIODS: 4
BUFFER_TIME: 500000
BUFFER_SIZE: 8000
BUFFER_BYTES: 32000
TICK_TIME: 0

Any suggestions?

#86

Another update:

When doing the dmesg command it returns the following below.
How to interpret these error messages?

root@rockpi-s:~# dmesg
[ 375.793438] rockchip-i2s-tdm ff320000.i2s: ASoC: error at snd_soc_dai_hw_params on ff320000.i2s: -22
[ 375.793546] ff320000.i2s-rk3308-hifi: ASoC: error at __soc_pcm_hw_params on ff320000.i2s-rk3308-hifi: -22

#87

Audio Support Rock Pi S ?

#88

@stuartiannaylor , Hi there and thank you for your response!

I read baronets tweak but I wasn’t sure that this is still valid after 3 years… I thought maybe todays software has been developed since then.

I am using Armbian_23.8.1_Rockpi-s_bookworm_current_6.1.50 from the Armbian download site.
Audio output from LINEOUT-pins works fine out-of-the-box!

My issue with audio input seems to be related to “pcm_hw_params” according to the error-messages. So I was hoping to be a little more precise in what needs to be fixed here.

Whats your opinion?
/ Dan

#89

Try a radxa image with the above as used to work I didn’t use armbian. Reasonbilly sure it was the debian and then at least you know.

#90

“Debian” :slight_smile: Features always worked better with stock kernels that never changes … They also don’t break as kernel never changes. I would assume OP wants to escape from Android kernel 4.4 or whatever stock version is but probably doesn’t understand severity of the problem. Rare people do.

Development, porting and maintaining features on mainline kernel was covered almost entirely by Armbian developers private resources. This had to stop some time ago as there was absolutely no interest from anyone to compensate for the loss developers have by doing this. No budget development is extremely hard to drive.

But. The beauty of open source - you can easily download sources and start debugging on your own. Asking on forums can help you getting some tips, but finding people that really knows something valuable or that will waste weeks of their time for you is like winning a lottery. Armbian development tools will also save you some time.

HW vendors sale hardware with kernel that does’t change, so this support development is cheap and manageable.

#91

That is who the reply is to.

1 Like
#92

You can try that and test, you could enable as did, the quality was poor.
The mics lines seem to pick up interference and always had a hunch the decoupling caps are ommitted.
They need to be as close to the SoC pins as at GPIO is a disaster.
I could be wrong, but the noise has that ‘computer interference’ tone. !?

#93

@igorp , Hi Igor!

So, first a quick recap.

Some years ago me and a friend bought a few RockPi-S boards, mainly because they were marketed with eight audio channels.
They have been collecting dust since the last time (2021) we tried to get the audio working properly.
We have since then been using Orange Pi Zero and Armbian for our audio purposes which works fine.

Now we wanted to give the RockPi-S boards a second chance. But the recommened kernel, tweaks and pinout is confusing to us. We have spent some hours this week reading the threds and testing to figure it out.
Most OS seems to handle audio output on pin LINEOUT-L and LINEOUT-R, as expected. The audio input is still a mystery to us…
I totally understand the beauty of open source and the fact that this is a “development board”. It just that we are not that skilld, yet. So, obviously there is no quick-fix to get any current OS to harmonize with the RockPi S audio.

We have not yet looked into the debugging tools. That might be a “winter challange” :slight_smile:
Meanwhile we can still use the OPiZ or some other SBC for audio.

#94

@stuartiannaylor

After installing rockpis_ubuntu_bionic_minimal_arm64_191219_0410-gpt.img
and applying baronets tweak I got these messages on de/re-compile:

root@rockpis:/boot/dtbs/4.4.143-34-rockchip-g3c9d2019dba7/rockchip# dtc -I dtb -O dts -f rockpi-s-linux.dtb -o rockpi-s-linux.dts
rockpi-s-linux.dts: Warning (unit_address_vs_reg): Node /ramoops_mem has a reg or ranges property, but no unit name
rockpi-s-linux.dts: Warning (unit_address_format): Node /reserved-memory/drm-logo@00000000 unit name should not have leading 0s

root@rockpis:/boot/dtbs/4.4.143-34-rockchip-g3c9d2019dba7/rockchip# dtc -I dts -O dtb -f rockpi-s-linux.dts -o rockpi-s-linux.dtb
rockpi-s-linux.dtb: Warning (unit_address_vs_reg): Node /ramoops_mem has a reg or ranges property, but no unit name
rockpi-s-linux.dtb: Warning (unit_address_format): Node /reserved-memory/drm-logo@00000000 unit name should not have leading 0s

Without the tweak applied I got sound out on pin LINEOUT-L and LINEOUT-R, as expected. (speaker-test -c2 -t sine -f 500)
With the tweak applied I got NO sound out on any pin, but maybe that has to do with those Warnings…?

I think we can leave the sound quality issue for the moment and focus on the “audio implementation”.

#95

The warnings are from a working DTB that you have merely converted from binary to text and back again and must be existing errors on other entities.
I seem to remember it was the same before also but we where on the 1st revision before Radxa even dropped 4mics from the the pin mux.

You could record from the mics before with the above, but like said sound quality binned that idea.
Apols its so long that I did give up, I am going to struggle to add anything I remember.

#96

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hi, i just follow your step, and can get the I2S MEMS microphone data, but then i changed I2S mems TO PDM MEMS microphone, i can’t success, and the pin46(PDM_CLK_S_M2) has nothing signal, what’s the problem ? please help , thanks a lot !

#97

Hello! Could you tell me how to enable pdm on rockchip rk 3566? It is for CM3 Radxa board.

Thank you !