40 lines
937 B
YAML
40 lines
937 B
YAML
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#
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# Copyright (c) 2019 Peter Bigot Consulting, LLC
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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description: Maxim DS3231 I2C RTC/TCXO
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compatible: "maxim,ds3231"
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include: i2c-device.yaml
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properties:
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reg:
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required: true
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32k-gpios:
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type: phandle-array
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required: false
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description: |
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32 KiHz open drain output
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The DS3231 defaults to providing a 32 KiHz square wave on this
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signal. The driver does not make use of this, but applications
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may want access.
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isw-gpios:
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type: phandle-array
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required: false
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description: |
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interrupt/square wave open drain output
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The DS3231 uses this signal to notify when an alarm has triggered,
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and also to produce a square wave aligned to the countdown chain.
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Both capabilities are used within the driver. This signal must be
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present to support time set and read operations that preserve
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sub-second accuracy.
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