NVIDIA Tegra GPIO support

modulename: gpio-tegra.ko

configname: CONFIG_GPIO_TEGRA

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>Memory mapped GPIO drivers
└─>NVIDIA Tegra GPIO support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Say yes here to support GPIO pins on NVIDIA Tegra SoCs.

source code: