I am working on a custom board which is using imx8mplus SoC and two rt5640 audio codec chips. In both of them, one is working as a master and the other is working as a slave. I need to enable the slave chip and test it for playing audio. I have made basic changes for porting audio and able to make rt5640 card showing in “aplay -l”. But not able to play audio in that and not able to do record.
Can anyone please tell me what things I should need to enable it.