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zed_adau1761 and xilinx-pcm-audio

Question asked by Stevo on Nov 27, 2015
Latest reply on Dec 1, 2015 by larsc

Hi,

 

I've been using the zed_adau1761.c soundcard driver as a guide in writing my own soundcard driver.  I have found basically 2 variants of the associated devicetree, one with the property "pcm = <&xilinx_pcm_audio_i2s>;" and one without.  The one with it appears to match a xilinx-pcm.c driver.

 

I'm trying to understand why the 2 variants, because I would have thought one would work and the other not, and I'm currently getting a PCM-related error when I try to use my driver with arecord and I'm trying to understand it.

 

Is anyone able to enlighten me?

 

Steve

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