Sony/Philips Digital Interface module support

modulename: snd-soc-fsl-spdif.ko

configname: CONFIG_SND_SOC_FSL_SPDIF

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>SoC Audio for Freescale CPUs
└─>Sony/Philips Digital Interface module support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y if you want to add Sony/Philips Digital Interface (SPDIF)
support for the Freescale CPUs.
This option is only useful for out-of-tree drivers since
in-tree drivers select it automatically.

source code: