# Copyright (c) 2022 Google Inc # SPDX-License-Identifier: Apache-2.0 config BBRAM_STM32 bool "ST STM32 Battery-backed RAM drivers" default y depends on DT_HAS_ST_STM32_BBRAM_ENABLED depends on COUNTER_RTC_STM32 || RTC_STM32 help This option enables the BBRAM driver for STM32 family of processors. STM32 BBRAM are 32-bit registers which can be used for storing user application data. They are implemented in the backup domain that remains powered-on by VBAT when the VDD power is switched off. They are not reset by system reset or when the device wakes up from Standby mode. They are reset by a backup domain reset.