6331d184e6
Add generic binding documentation for the RTC subsystem. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Rob Herring <robh@kernel.org>
31 lines
1.2 KiB
Plaintext
31 lines
1.2 KiB
Plaintext
Generic device tree bindings for Real Time Clock devices
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========================================================
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This document describes generic bindings which can be used to describe Real Time
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Clock devices in a device tree.
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Required properties
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-------------------
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- compatible : name of RTC device following generic names recommended practice.
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For other required properties e.g. to describe register sets,
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clocks, etc. check the binding documentation of the specific driver.
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Optional properties
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-------------------
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- start-year : if provided, the default hardware range supported by the RTC is
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shifted so the first usable year is the specified one.
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The following properties may not be supported by all drivers. However, if a
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driver wants to support one of the below features, it should adapt the bindings
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below.
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- trickle-resistor-ohms : Selected resistor for trickle charger. Should be given
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if trickle charger should be enabled
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- trickle-diode-disable : Do not use internal trickle charger diode Should be
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given if internal trickle charger diode should be
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disabled
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- wakeup-source : Enables wake up of host system on alarm
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