TWL4030 USB Transceiver Driver

modulename: twl4030-usb.ko

and/or

phy-twl4030-usb.ko

configname: CONFIG_TWL4030_USB

Linux Kernel Configuration
└─>Device Drivers
└─>PHY Subsystem
└─>TWL4030 USB Transceiver Driver
In linux kernel since version 2.6.29 (release Date: 2009-03-23)  
Enable this to support the USB OTG transceiver on TWL4030
family chips (including the TWL5030 and TPS659x0 devices).
This transceiver supports high and full speed devices plus,
in host mode, low speed.

source code:
drivers/phy/phy-twl4030-usb.c