Hi

I am facing an issue while doing the bring-up of the ZL38050 Audio Card from Microsemi on the Ambarella ARM platform.

I am able to see the card entry in /proc/asound/cards. On executing aplay/arecord I get below error:

[image: Screenshot from 2022-09-26 14-44-30.png]

On enabling the LIBASOUND_DEBUG=1 I could see below error line : ALSA lib ../../../src/pcm/pcm_hw.c:1715:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-22): Invalid argument

Can anyone guide where the problem could be, is it due to any configuration mismatch in dtsi or in driver. Also sharing the dtsi changes made to enable this codec.

sound {

compatible = "fsl,ms-dac"; model = "zl380tw"; //codec-name = "zl380tw @ AMBEVK"; //codec-name = "ZL380TW0"; codec-name = "codec"; cpu-dai = <&i2s0>; audio-codec = <&zl380tw>; codec-dai-name = "zl380tw0-hifi"; stream-name = "ZL380TW0-STREAM"; }

Following node added in SPI : zl380tw: codec@1 { compatible = "ms,zl380tw"; spi-max-frequency = <20000000>; #sound-dai-cells = <0>; spi-cpha; spi-cpol; reg = <0>; status = "ok"; };