IMX 8 QuadMax MEK, CS42888 does not work..

[mustafa_ozcelik]

I need some help getting IMX-AUD-IO board / CS42888 to work with my iMX8QuadMax Multisensory Enablement Kit. I am using fsl-imx-xwayland distro, 4.9.51_beta2 BSP, fsl-imx-qt5-validation-imx image, and issuing the following commands to record audio from a mic that is connected to MIC 1 in IMX-AUD-IO board.

arecord -f dat -d 10 -D hw:0 test.wav
aplay test.wav

But there is no audio.

I could see that esai mapping is successful for cs42888 in the dmesg. So I assume driver is succesfully loaded and initialized.

The list of playback devices (aplay -l):

**** List of PLAYBACK Hardware Devices ****
card 0: cs42888audio [cs42888-audio], device 0: HiFi cs42888-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: wm8960audio [wm8960-audio], device 0: HiFi wm8960-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: wm8960audio [wm8960-audio], device 1: HiFi-ASRC-FE (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: imxaudiohdmi [imx-audio-hdmi], device 0: imx8 hdmi snd-soc-dummy-dai-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

The list of recording devices (arecord -l):

**** List of CAPTURE Hardware Devices ****
card 0: cs42888audio [cs42888-audio], device 0: HiFi cs42888-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: wm8960audio [wm8960-audio], device 0: HiFi wm8960-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: wm8960audio [wm8960-audio], device 1: HiFi-ASRC-FE (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Contents (amixer -c 0 contents):

numid=13,iface=MIXER,name='ADC High-Pass Filter Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=21,iface=MIXER,name='ADC Single Volume Control Switch'
  ; type=INTEGER,access=rw------,values=1,min=0,max=1,step=0
  : values=0
numid=22,iface=MIXER,name='ADC Soft Ramp & Zero Cross Control Switch'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'Immediate Change'
  ; Item #1 'Zero Cross'
  ; Item #2 'Soft Ramp'
  ; Item #3 'Soft Ramp on Zero Cross'
  : values=0
numid=5,iface=MIXER,name='ADC1 Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=176,step=0
  : values=128,128
  | dBscale-min=-64.00dB,step=0.50dB,mute=0
numid=11,iface=MIXER,name='ADC1 Invert Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=15,iface=MIXER,name='ADC1 Single Ended Mode Switch'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Differential'
  ; Item #1 'Single-Ended'
  : values=0
numid=6,iface=MIXER,name='ADC2 Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=176,step=0
  : values=128,128
  | dBscale-min=-64.00dB,step=0.50dB,mute=0
numid=12,iface=MIXER,name='ADC2 Invert Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=16,iface=MIXER,name='ADC2 Single Ended Mode Switch'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Differential'
  ; Item #1 'Single-Ended'
  : values=0
numid=19,iface=MIXER,name='DAC Auto Mute Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=14,iface=MIXER,name='DAC De-emphasis Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=17,iface=MIXER,name='DAC Single Volume Control Switch'
  ; type=INTEGER,access=rw------,values=1,min=0,max=1,step=0
  : values=0
numid=18,iface=MIXER,name='DAC Soft Ramp & Zero Cross Control Switch'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'Immediate Change'
  ; Item #1 'Zero Cross'
  ; Item #2 'Soft Ramp'
  ; Item #3 'Soft Ramp on Zero Cross'
  : values=0
numid=7,iface=MIXER,name='DAC1 Invert Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=1,iface=MIXER,name='DAC1 Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=255,255
  | dBscale-min=-127.50dB,step=0.50dB,mute=1
numid=8,iface=MIXER,name='DAC2 Invert Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=2,iface=MIXER,name='DAC2 Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=255,255
  | dBscale-min=-127.50dB,step=0.50dB,mute=1
numid=9,iface=MIXER,name='DAC3 Invert Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=3,iface=MIXER,name='DAC3 Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=255,255
  | dBscale-min=-127.50dB,step=0.50dB,mute=1
numid=10,iface=MIXER,name='DAC4 Invert Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=4,iface=MIXER,name='DAC4 Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=255,255
  | dBscale-min=-127.50dB,step=0.50dB,mute=1
numid=20,iface=MIXER,name='Mute ADC Serial Port Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off

I played around with alsamixer, and I don't see anything muted, although amixer contents list some properties as muted. There is no sound coming from the recorded audio. I need some help figuring this out.

I made sure that 4.9.51_beta2 BSP Release Notes say that CS42888 works finely in their release, so I doubt it is a BSP-related problem.

There is unfortunately no help in the documentation (4.9.51_beta2) for this kind of issue, -that I could see-, other than a few arecord commands. So any guidance is appreciated. Thanks.

[igorpadykov]

Hi Mustafa

one can try unit tests

mxc_alsa_hw_params\test - imx-test - i.MX Driver Test Application Software 

mxc_esai_test\test - imx-test - i.MX Driver Test Application Software 

and with  Linux L4.14.62

linux-imx - i.MX Linux kernel 

Best regards
igor
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[mustafa_ozcelik]

I am able to reproduce even if I do the mentioned tests. Specifically mxc_esai_test/doc/FSL-UT-ESAI-002.txt for recording has the same behavior. Though I needed to set my card -Dhw:0,1, Otherwise it did not work. Mic and recording works through 3.5mm jack, but does not work with IMX-AUD-IO's MIC 1, MIC 2 or LINE IN lines.

[shabna_m]

@mustafa_ozcelik  @igorpadykov  I do have the same issue.

Is there any solution available currently?

[igorpadykov]

please look at latest documentation:

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...

Best regards
igor

[shabna_m]

@igorpadykovThank you for your response.

I have gone through the documents and nothing help me to solve the issue. Still the sound recorded using the mic connected to the IMX-AUD-IO board is not audible while playing it.

Could you please help me on further to solve the issue?

[igorpadykov]

one can try with latest Demo Image from

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...

and sect.7.5 Audio Mixer (AUDMIX) i.MX Linux Reference Manual​

Best regards
igor

[shabna_m]

Thank you very much@igorpadykov  for your support. It's working with latest linux.

So, It is not possible to make it work in the 4.14.98 ? I am following the virtualization guide which is using linux 4.14.98 and android 9 auto. I think android 9could not be used with the latest linux.

[igorpadykov]

Hi shabna_m

one can try attached patch, to test ESAI1 on i.MX8QM MEK board, connect IMX-AUD-IO
board to AUDIO SLOT 2 in MXCIMX8-8X-BB board.
In IMX-AUD-IO board, when playback, connect speaker to OUT-FL and OUT-FR,
when capture, connect line in cable to LINE IN-R and LINE IN-L.

Generally formal support for each peripheral and processor type is described in Release Notes

for each software release

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...

Formal support for functionalities above that is provided using

https://contact.nxp.com/new-prof-svcs-sw-tech

Best regards
igor

[shabna_m]

Thank you @igorpadykov . I have tried what you have mentioned. Unfortunately it is not working, even the speaker also.

Could you please mention what type of mic you are using? To confirm,it is not a hardware failure.

[igorpadykov]

if, as you said : " It's working with latest linux"

one can port changes to necessary linux revision.

NXP can help with such efforts, there is special service for that:

https://contact.nxp.com/new-prof-svcs-sw-tech

Best regards
igor

[shabna_m]

@igorpadykovI am extremely sorry for sharing the wrong information before. "Mic is not working in the latest linux bsp".

Thank you for your patience.

[igorpadykov]

Hi Mustafa

this is preproduction part (not publicly released yet) and not officially
supported. Full featured support may be provided with NXP Professional Services
NXP Professional Services|NXP 

Best regards
igor