Maxim MAX8973 voltage regulator

modulename: max8973-regulator.ko

configname: CONFIG_REGULATOR_MAX8973

Linux Kernel Configuration
└─>Device Drivers
└─>Voltage and Current Regulator Support
└─>Maxim MAX8973 voltage regulator
In linux kernel since version 3.1 (release Date: 2011-10-24)  
The MAXIM MAX8973 high-efficiency. three phase, DC-DC step-down
switching regulator delievers up to 9A of output current. Each
phase operates at a 2MHz fixed frequency with a 120 deg shift
from the adjacent phase, allowing the use of small magnetic component.

source code: