TI BQ257XX Buck/Boost Charge Controller

modulename: bq257xx.ko

configname: CONFIG_MFD_BQ257XX

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>TI BQ257XX Buck/Boost Charge Controller
Support Texas Instruments BQ25703 Buck/Boost converter with
charge controller. It consists of regulators that provide
system voltage and OTG voltage, and a charger manager for
batteries containing one or more cells.

source code: