Intel Machine drivers


Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>Intel Machine drivers
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Intel ASoC Machine Drivers. If you have a Intel machine that
has an audio controller with a DSP and I2S or DMIC port, then
enable this option by saying Y

Note that the answer to this question doesn't directly affect the
kernel: saying N will just cause the configurator to skip all
the questions about Intel ASoC machine drivers.