maxim,ds3231-rtc

Note

An implementation of a driver matching this compatible is available in drivers/rtc/rtc_ds3231.c.

Description

Maxim DS3231 I2C RTC/TCXO

Properties

Properties not inherited from the base binding file.

Name

Type

Details

freq-32khz-gpios

phandle-array

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

phandle-array

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.

alarms-count

int

Number of alarms supported by RTC device. The number of
alarms defaults to 0, which indicates that the RTC has
no alarms.

Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “maxim,ds3231-rtc” compatible.

Name	Type	Details
`status`	`string`	indicates the operational status of a device Legal values: `'ok'`, `'okay'`, `'disabled'`, `'reserved'`, `'fail'`, `'fail-sss'` See Important properties for more information.
`compatible`	`string-array`	compatible strings This property is required. See Important properties for more information.
`reg`	`array`	register space See Important properties for more information.
`reg-names`	`string-array`	name of each register space
`interrupts`	`array`	interrupts for device See Important properties for more information.
`interrupts-extended`	`compound`	extended interrupt specifier for device
`interrupt-names`	`string-array`	name of each interrupt
`interrupt-parent`	`phandle`	phandle to interrupt controller node
`label`	`string`	No description provided for this label See Important properties for more information.
`clocks`	`phandle-array`	Clock gate information
`clock-names`	`string-array`	name of each clock
`#address-cells`	`int`	number of address cells in reg property
`#size-cells`	`int`	number of size cells in reg property
`dmas`	`phandle-array`	DMA channels specifiers
`dma-names`	`string-array`	Provided names of DMA channel specifiers
`io-channels`	`phandle-array`	IO channels specifiers
`io-channel-names`	`string-array`	Provided names of IO channel specifiers
`mboxes`	`phandle-array`	mailbox / IPM channels specifiers
`mbox-names`	`string-array`	Provided names of mailbox / IPM channel specifiers
`power-domains`	`phandle-array`	Power domain specifiers
`power-domain-names`	`string-array`	Provided names of power domain specifiers
`#power-domain-cells`	`int`	Number of cells in power-domains property
`zephyr,deferred-init`	`boolean`	Do not initialize device automatically on boot. Device should be manually initialized using device_init().
`wakeup-source`	`boolean`	Property to identify that a device can be used as wake up source. When this property is provided a specific flag is set into the device that tells the system that the device is capable of wake up the system. Wake up capable devices are disabled (interruptions will not wake up the system) by default but they can be enabled at runtime if necessary.
`zephyr,pm-device-runtime-auto`	`boolean`	Automatically configure the device for runtime power management after the init function runs.
`zephyr,disabling-power-states`	`phandles`	List of power states that will disable this device power.