Richtek RT6190 4-Switch BuckBoost controller

modulename: rt6190-regulator.ko

configname: CONFIG_REGULATOR_RT6190

Linux Kernel Configuration
└─>Device Drivers
└─>Voltage and Current Regulator Support
└─>Richtek RT6190 4-Switch BuckBoost controller
In linux kernel since version 6.2 (release Date: 2023-02-19)  
The RT6190 is a 4-Switch BuckBoost controller designed for converting
input voltage to output voltage that can be equal to, higher or lower
than input voltage. It operates with wide input voltage range from
4.5V to 36V, and the output voltage can be set from 3V to 36V by
external FB pin.

source code: