WM8960 TX data not working on IMX Platform (Linux)

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WM8960 TX data not working on IMX Platform (Linux)

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mayqueen
Contributor IV

Hello All:

Platform: IMXRT1050

OS: ucLinux (kernel 4.5)

Issues: WM8960 codec EVK not working


I almost working for this issue but got strange problem:
The MCLK, TX_BCLK and TX_SYNC is working fine when I execute command aplay test.wav, but the key issue is TX_DATA is no any response, because I use the simple-sound-card and wm8960 driver to run this project, please give me some directions for debug the TX_DATA part, thanks a lot!

dmesg:

fsl-asoc-card sound: wm8960-hifi <-> 40384000.sai mapping ok
input: gpio-keys as /devices/platform/gpio-keys/input/input0
clk: Not disabling unused clocks
ALSA device list:
  #0: wm8960-audio

error message:

aplay -Dplughw:0 test.wav -f cd
Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
ay: pcm_write:2051: write error: Input/output error

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igorpadykov
NXP Employee
NXP Employee

Hi May

unfortunately nxp does not support linux on i.MXRT platforms, in general

one can check sai configuration (printfing registers) using app note AN12090 Using SAI

https://www.nxp.com/docs/en/application-note/AN12090.pdf 

and wm8960 examples in SDK EVKB-IMXRT1050 package

Welcome | MCUXpresso SDK Builder 

Best regards
igor
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