From: Flavio Suligoi <f.suligoi@asem.it>
To: Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>
Cc: <linux-rtc@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
Flavio Suligoi <f.suligoi@asem.it>
Subject: [PATCH 1/2] dt-bindings: rtc: add battery-low-hw-alarm property
Date: Wed, 3 Apr 2019 16:52:44 +0200 [thread overview]
Message-ID: <1554303165-24813-1-git-send-email-f.suligoi@asem.it> (raw)
Some RTC devices have a battery-low automatic detection circuit.
The battery-low event is usually reported with:
- a bit change in a RTC status register
- a hw signaling (generally using an interrupt generation), changing
the hw level of a specific pin;
The new property "battery-low-hw-alarm" enable the RTC to generate the
hw signaling in case of battery-low event.
Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
---
Documentation/devicetree/bindings/rtc/rtc.txt | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/rtc/rtc.txt b/Documentation/devicetree/bindings/rtc/rtc.txt
index a97fc6a..f93a44d 100644
--- a/Documentation/devicetree/bindings/rtc/rtc.txt
+++ b/Documentation/devicetree/bindings/rtc/rtc.txt
@@ -31,6 +31,9 @@ below.
expressed in femto Farad (fF).
The default value shall be listed (if optional),
and likewise all valid values.
+- battery-low-hw-alarm : Enable the "battery-low" output pin. This function
+ is available on the following devices:
+ - pcf2127 - pin used for alarm: INTn
Trivial RTCs
------------
--
2.7.4
next reply other threads:[~2019-04-03 14:53 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-03 14:52 Flavio Suligoi [this message]
2019-04-03 14:52 ` [PATCH 2/2] rtc: pcf2127: add battery-low INTn generation Flavio Suligoi
2019-04-03 15:08 ` Alexandre Belloni
2019-04-03 15:14 ` Flavio Suligoi
2019-04-03 15:31 ` Alexandre Belloni
2019-04-03 15:49 ` Flavio Suligoi
2019-04-03 15:56 ` Alexandre Belloni
2019-04-03 16:09 ` Flavio Suligoi
2019-04-03 16:15 ` Alexandre Belloni
2019-04-03 16:20 ` Flavio Suligoi
2019-04-03 14:57 ` [PATCH 1/2] dt-bindings: rtc: add battery-low-hw-alarm property Alexandre Belloni
2019-04-03 15:06 ` Flavio Suligoi
2019-04-03 15:28 ` Alexandre Belloni
2019-04-03 15:32 ` Flavio Suligoi
2019-04-06 6:07 ` Rob Herring
2019-04-06 12:55 ` Alexandre Belloni
2019-04-08 7:22 ` Flavio Suligoi
2019-04-09 1:18 ` Rob Herring
2019-04-10 8:04 ` Flavio Suligoi
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