Ricoh RN5T567/618 PMIC

modulename: rn5t618.ko

configname: CONFIG_MFD_RN5T618

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Device Tree and Open Firmware support
└─>Ricoh RN5T567/618 PMIC
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say yes here to add support for the Ricoh RN5T567,
RN5T618, RC5T619 PMIC.
This driver provides common support for accessing the device,
additional drivers must be enabled in order to use the
functionality of the device.

source code: