SoC Audio support for Tegra boards using an RT5640 codec

configname: CONFIG_SND_SOC_TEGRA_RT5640

Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>GPIO Support
└─>SoC Audio support for Tegra boards using an RT5640 codec
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y or M here if you want to add support for SoC audio on Tegra
boards using the RT5640 codec, such as Dalmore.