| # Copyright (c) 2024 ANITRA system s.r.o. |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| description: Micro Crystal RV3028 RTC |
| |
| compatible: "microcrystal,rv3028" |
| |
| include: |
| - name: rtc-device.yaml |
| - name: i2c-device.yaml |
| |
| properties: |
| clkout-frequency: |
| type: int |
| enum: |
| - 32768 |
| - 8192 |
| - 1024 |
| - 64 |
| - 32 |
| - 1 |
| description: | |
| Frequency of the CLKOUT signal in Hertz (Hz). If omitted, the CLKOUT pin is LOW. |
| |
| backup-switch-mode: |
| type: string |
| required: true |
| enum: |
| - disabled |
| - direct |
| - level |
| description: | |
| Automatic backup switchover function selection: |
| - disabled: The switchover function is disabled - only one power supply available (VDD) |
| - direct: Direct Switching Mode (DSM): when VDD < VBACKUP, switchover occurs from VDD to |
| VBACKUP without requiring VDD to drop below VTH:LSM (2.0 V) |
| - level: Level Switching Mode (LSM): when VDD < VTH:LSM (2.0 V) AND VBACKUP > VTH:LSM, |
| switchover occurs from VDD to VBACKUP |
| |
| trickle-resistor-ohms: |
| type: int |
| enum: |
| - 3000 |
| - 5000 |
| - 9000 |
| - 15000 |
| description: | |
| Enable the trickle charger with provided current-limiting resistance in ohms. The trickle |
| charger allows a battery or supercapacitor connected to VBACKUP to be charged. |
| |
| int-gpios: |
| type: phandle-array |
| description: | |
| GPIO connected to the RV3028 INT interrupt output. This signal is open-drain, active low. |
