Tegra210 AMX module

modulename: snd-soc-tegra210-amx.ko

configname: CONFIG_SND_SOC_TEGRA210_AMX

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>Tegra210 AMX module
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
Config to enable the Audio Multiplexer (AMX) which can multiplex
four input streams (each of up to 16 channels) and generate
output stream (of up to 16 channels). A byte RAM helps to form an
output frame by any combination of bytes from the input frames.
Say Y or M if you want to add support for Tegra210 AMX module.

source code: