Capture Audio with CM3 ?!

dear all ,
hope you are doing fine …
i bought already CM3 with IO board , every thing fine with this board except the capture input cant make it work , for example the output of
root@radxa-cm3-io:~# arecord -l
**** List of CAPTURE Hardware Devices ****
root@radxa-cm3-io:~#
as can be shown there are no capture hardware devices but still you have 2 mic in in dev board ,

already try debian , ubuntu , but all same issue …

thank you in advance …

regards

any advice please for this issue ?