Rockchip RK808 Power Management chip

modulename: rk808.ko

configname: CONFIG_MFD_RK808

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Rockchip RK808 Power Management chip
In linux kernel since version 3.10 (release Date: 2013-06-30)  
If you say yes here you get support for the RK808
Power Management chips.
This driver provides common support for accessing the device
through I2C interface. The device supports multiple sub-devices
including interrupts, RTC, LDO & DCDC regulators, and onkey.

source code: