Current BSP : yocto with branch of imx_3.10.53_1.1.0-ga
Target Board: Custom board schematic circuit is basically copy from imx6qsabresd,
except the MCLK of wm8962 , we use 24MHz external crystal instead.
I use the following command to test recording.
arecord -vv -t wav -fdat -d 10 rdfile.wav
when i play the "rdfile.wav" file , there is no sound.
I have checked "ADCDAT" pin of wm8962 while recording , there is no signal out.
The power supply pins on wm8962 are all normal .
I believe my board is ok , because i can record voice normally with the bsp of L3.0.35_4.1.0 on this board.
So i compared wm8962 driver code between the two bsps , try to find solution, but failed.
Can any body tell me the solution or any advices ?