CONFIG_SND_PCM_IEC958 (not configurable)

configname: CONFIG_SND_PCM_IEC958

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>SND_PCM_IEC958
In linux kernel since version 3.10 (release Date: 2013-06-30)  

is depended by
CONFIG_SND_SOC_STM32_SAI