PHY Core

modulename: phy-core.ko

configname: CONFIG_GENERIC_PHY

Linux Kernel Configuration
└─>Device Drivers
└─>PHY Subsystem
└─>PHY Core
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Generic PHY support.

This framework is designed to provide a generic interface for PHY
devices present in the kernel. This layer will have the generic
API by which phy drivers can create PHY using the phy framework and
phy users can obtain reference to the PHY. All the users of this
framework should select this config.

source code:
drivers/phy/phy-core.c
is selected by
CONFIG_USB_MUSB_SUNXI