ti,tps382x
Vendor: Texas Instruments
Note
An implementation of a driver matching this compatible is available in drivers/watchdog/wdt_ti_tps382x.c.
Description
Watchdog driver for external IC (TPS382x)
Properties
Properties not inherited from the base binding file.
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WDI gpio. If WDI remains high or low longer than the timeout period, then reset is triggered. The reset has a typical delay time of 200 ms for TPS3823/4/8, TPS3823A. The timer clears when reset is asserted or when WDI sees a rising edge or a falling edge. If unused, the WDI connection must be high impedance to prevent it from causing a reset event.
This property is required. |
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Time-out period in milliseconds. Typical for TPS3823/4/8 and TPS3823A is 1.6 seconds but minimum is 0.9. To avoid false positive watchdog reset the watchdog should be kicked within the minimum timeout period. The kick interval also needs to compensate for MCU clock tolerances which means it should be kicked with an interval less than 0.9 seconds. If this device is used as fallback for the task watchdog this can be achieved by setting e.g. TASK_WDT_MIN_TIMEOUT to 850 and TASK_WDT_HW_FALLBACK_DELAY to 750.
Default value: |
Deprecated properties not inherited from the base binding file.
(None)
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 “ti,tps382x” compatible.
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indicates the operational status of a device
Legal values: See Important properties for more information. |
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compatible strings
This property is required. See Important properties for more information. |
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register space
See Important properties for more information. |
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name of each register space
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interrupts for device
See Important properties for more information. |
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extended interrupt specifier for device
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name of each interrupt
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phandle to interrupt controller node
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Human readable string describing the device (used as device_get_binding() argument)
See Important properties for more information. This property is deprecated. |
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Clock gate information
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name of each clock
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number of address cells in reg property
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number of size cells in reg property
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DMA channels specifiers
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Provided names of DMA channel specifiers
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IO channels specifiers
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Provided names of IO channel specifiers
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mailbox / IPM channels specifiers
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Provided names of mailbox / IPM channel specifiers
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Power domain specifiers
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Provided names of power domain specifiers
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Number of cells in power-domains property
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Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
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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.
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Automatically configure the device for runtime power management after the
init function runs.
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List of power states that will disable this device power.
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