National Semiconductors LP3972 PMIC regulator driver

modulename: lp3972.ko

configname: CONFIG_REGULATOR_LP3972

Linux Kernel Configuration
└─>Device Drivers
└─>Voltage and Current Regulator Support
└─>National Semiconductors LP3972 PMIC regulator driver
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
Say Y here to support the voltage regulators and convertors
on National Semiconductors LP3972 PMIC

source code:
drivers/regulator/lp3972.c