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Date: Sun, 11 Nov 2018 20:31:13 +0100
From: Alexandre Belloni <alexandre.belloni@...tlin.com>
To: Rob Herring <robh+dt@...nel.org>, linux-rtc@...r.kernel.org
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH 1/2] dt-bindings: rtc: add generic bindings
Add generic binding documentation for the RTC subsystem.
Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
Documentation/devicetree/bindings/rtc/rtc.txt | 30 +++++++++++++++++++
1 file changed, 30 insertions(+)
create mode 100644 Documentation/devicetree/bindings/rtc/rtc.txt
diff --git a/Documentation/devicetree/bindings/rtc/rtc.txt b/Documentation/devicetree/bindings/rtc/rtc.txt
new file mode 100644
index 000000000000..221b7da50aca
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc.txt
@@ -0,0 +1,30 @@
+Generic device tree bindings for Real Time Clock devices
+========================================================
+
+This document describes generic bindings which can be used to describe Real Time
+Clock devices in a device tree.
+
+Required properties
+-------------------
+
+- compatible : name of RTC device following generic names recommended practice.
+
+For other required properties e.g. to describe register sets,
+clocks, etc. check the binding documentation of the specific driver.
+
+Optional properties
+-------------------
+
+- start-year : if provided, the default hardware range supported by the RTC is
+ shifted so the first usable year is the specified one.
+
+The following properties may not be supported by all drivers. However, if a
+driver wants to support one of the below features, it should adapt the bindings
+below.
+- trickle-resistor-ohms : Selected resistor for trickle charger. Should be given
+ if trickle charger should be enabled
+- trickle-diode-disable : Do not use internal trickle charger diode Should be
+ given if internal trickle charger diode should be
+ disabled
+- wakeup-source : Enables wake up of host system on alarm
+
--
2.19.1
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