How to make iMx6 ASRC as SPDIF Back-End/Front-End

[arc_lin]

Hi Community,

My goal is to make 48kHz audio file can be playback in SPDIF 44.1kHz or 96kHz output. It need ASRC support.

I have tried to add ASCR as SPDIF sound card dai_link but totally not working.

Does anyone have done this before and could provide us some advice or reference code?

Thanks!

 Arc.

[igorpadykov]

Hi arc

one can try asrc unit test with i.MX6Q Sabre SD reference board

mxc_asrc_test\test - imx-test - i.MX Driver Test Application Software 

and with Linux 4.9.88_2.0.0 Demo Images

https://www.nxp.com/webapp/Download?colCode=L4.9.88_2.0.0_MX6QDLSOLOX&appType=license&location=null&... 

Documentation

https://www.nxp.com/webapp/Download?colCode=L4.9.88_2.0.0_LINUX_DOCS&Parent_nodeId=13376994810717061... 

sources

linux-imx - i.MX Linux kernel 

Best regards
igor
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[arc_lin]

Hi,

mxc_asrc_test is workable, but for some reason we need to combine ASRC and SPDIF in kernel driver,

Like SabreSD support WM8962 with ASRC FE/BE, and I know it needs professional services. 

Thanks!

Arc.