| # |
| # Copyright (c) 2024 Gergo Vari <work@gergovari.com> |
| # |
| # SPDX-License-Identifier: Apache-2.0 |
| # |
| |
| description: Maxim DS3231 I2C RTC/TCXO |
| |
| compatible: "maxim,ds3231-rtc" |
| |
| include: [rtc-device.yaml] |
| |
| properties: |
| freq-32khz-gpios: |
| type: phandle-array |
| description: | |
| |
| 32 KiHz open drain output |
| |
| The DS3231 defaults to providing a 32 KiHz square wave on this |
| signal. The driver does not make use of this, but applications |
| may want access. |
| |
| isw-gpios: |
| type: phandle-array |
| description: | |
| |
| interrupt/square wave open drain output |
| |
| The DS3231 uses this signal to notify when an alarm has triggered, |
| and also to produce a square wave aligned to the countdown chain. |
| Both capabilities are used within the driver. |
| |
| This signal must be present to support time set |
| and read operations that preserve sub-second accuracy. |
