CS47L63: Failed to reset CS47L63

Sometimes with nrf5340 audio dk application example i get the following:

I found that this error comes from src\drivers\cs47l63_comm.c file at:

ret = cs47l63_reset(cs47l63_driver);
if (ret != CS47L63_STATUS_OK) {
		LOG_ERR("Failed to reset CS47L63");
		return -ENXIO;
}

But i cannot find where is the definition of cs47l63_reset or the file cs47l63.h that is included on top.

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