PCI HiFi2 (Merrifield) Platforms

modulename: snd-intel-sst-pci.ko

Linux Kernel Configuration
└─> Device Drivers
└─> Sound card support
└─> Advanced Linux Sound Architecture
└─> ALSA for SoC audio support
└─> PCI support
└─> PCI HiFi2 (Merrifield) Platforms

If you have a Intel Merrifield/Edison platform, then
enable this option by saying Y or m. Distros will typically not
enable this option: while Merrifield/Edison can run a mainline
kernel with limited functionality it will require a firmware file
which is not in the standard firmware tree

source code: