STMicroelectronics STM32 BOOSTER

modulename: stm32-booster.ko

configname: CONFIG_REGULATOR_STM32_BOOSTER

Linux Kernel Configuration
└─>Device Drivers
└─>Voltage and Current Regulator Support
└─>STMicroelectronics STM32 BOOSTER
In linux kernel since version 5.1 (release Date: 2019-05-05)  
This driver supports internal booster (3V3) embedded in some
STMicroelectronics STM32 chips. It can be used to supply ADC analog
input switches when vdda supply is below 2.7V.

This driver can also be built as a module. If so, the module
will be called stm32-booster.

source code:
depends
CONFIG_REGULATOR
CONFIG_ARCH_STM32 or CONFIG_COMPILE_TEST