Audio Mixer (AUDMIX) module support

modulename: snd-soc-fsl-audmix.ko

configname: CONFIG_SND_SOC_FSL_AUDMIX

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>SoC Audio for Freescale CPUs
└─>Audio Mixer (AUDMIX) module support
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
Say Y if you want to add Audio Mixer (AUDMIX)
support for the NXP iMX CPUs.

source code: