| # Copyright (c) 2022 Google Inc. |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| description: | |
| STM32 Battery Backed RAM |
| |
| 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. |
| |
| Note: Since STM32 BBRAM is in RTC backup domain, STM32 RTC node must be |
| enabled if STM32 BBRAM node is enabled. |
| |
| compatible: "st,stm32-bbram" |
| |
| include: base.yaml |
| |
| properties: |
| st,backup-regs: |
| type: int |
| required: true |
| description: Number of available backup registers. |
