ROHM BD70528 Power Management IC

modulename: rohm-bd70528.ko

configname: CONFIG_MFD_ROHM_BD70528

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Device Tree and Open Firmware support
└─>ROHM BD70528 Power Management IC
In linux kernel since version 5.1 (release Date: 2019-05-05)  
Select this option to get support for the ROHM BD70528 Power
Management IC. BD71837 is general purpose single-chip power
management IC for battery-powered portable devices. It contains
3 ultra-low current consumption buck converters, 3 LDOs and 2 LED
drivers. Also included are 4 GPIOs, a real-time clock (RTC), a 32kHz
crystal oscillator, high-accuracy VREF for use with an external ADC,
10 bits SAR ADC for battery temperature monitor and 1S battery
charger.

source code: