NVIDIA Tegra USB PHY Driver

modulename: phy-tegra-usb.ko

configname: CONFIG_USB_TEGRA_PHY

Linux Kernel Configuration
└─>Device Drivers
└─>USB support
└─>USB Physical Layer drivers
└─>NVIDIA Tegra USB PHY Driver
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This driver provides PHY support for the USB controllers found
on NVIDIA Tegra SoC's.

source code: