Samsung USB PHY controller Driver

modulename: samsung-usbphy.ko

and/or

phy-samsung-usb.ko

configname: CONFIG_SAMSUNG_USBPHY

Linux Kernel Configuration
└─>Device Drivers
└─>USB support
└─>Samsung USB PHY controller Driver
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Enable this to support Samsung USB phy controller for samsung
SoCs.

source code:
drivers/usb/phy/samsung-usbphy.c