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WM8960 TX data not working on IMXRT Platform (ucLinux)

NutsBoard

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