From: Frans Klaver <frans.klaver@xsens.com>
To: Sebastian Reichel <sre@kernel.org>
Cc: "René Moll" <linux@r-moll.nl>,
"Tjerk Hofmeijer" <tjerk.hofmeijer@xsens.com>,
"Frans Klaver" <frans.klaver@xsens.com>,
"Dmitry Eremin-Solenikov" <dbaryshkov@gmail.com>,
"David Woodhouse" <dwmw2@infradead.org>,
"Grant Likely" <grant.likely@linaro.org>,
"Rob Herring" <robh+dt@kernel.org>,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
devicetree@vger.kernel.org
Subject: [PATCH v3 2/2] power: reset: document LTC2952 poweroff support
Date: Mon, 6 Oct 2014 10:40:36 +0200 [thread overview]
Message-ID: <1412584836-27677-3-git-send-email-frans.klaver@xsens.com> (raw)
In-Reply-To: <1412584836-27677-1-git-send-email-frans.klaver@xsens.com>
From: René Moll <linux@r-moll.nl>
Signed-off-by: René Moll <linux@r-moll.nl>
Signed-off-by: Tjerk Hofmeijer <tjerk.hofmeijer@xsens.com>
Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
---
.../bindings/power/reset/ltc2952-poweroff.txt | 31 ++++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt
diff --git a/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt b/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt
new file mode 100644
index 0000000..3d15814
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt
@@ -0,0 +1,31 @@
+Binding for the LTC2952 PowerPath controller
+
+This chip is used to externally trigger a system shut down. Once the trigger has
+been sent, the chips' watchdog has to be reset to gracefully shut down.
+If the Linux systems decides to shut down it powers off the platform via the
+kill signal.
+
+Required properties:
+
+- compatible: Must contain: "lltc,ltc2952"
+- watchdog-gpios: phandle + gpio-specifier for the GPIO connected to the
+ chip's watchdog line
+- kill-gpios: phandle + gpio-specifier for the GPIO connected to the
+ chip's kill line
+
+Optional properties:
+
+- trigger-gpios: phandle + gpio-specifier for the GPIO connected to the
+ chip's trigger line. If this property is not set, the
+ trigger function is ignored and the chip is kept alive
+ until an explicit kill signal is received
+
+Example:
+
+ltc2952 {
+ compatible = "lltc,ltc2952";
+
+ trigger-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+ watchdog-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
+ kill-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
+};
--
2.1.0
prev parent reply other threads:[~2014-10-06 8:42 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-06 8:40 [PATCH v3 0/2] Add support for ltc2952 poweroff Frans Klaver
2014-10-06 8:40 ` [PATCH v3 1/2] power: reset: add LTC2952 poweroff support Frans Klaver
2014-10-06 21:32 ` Guenter Roeck
2014-10-07 8:15 ` Frans Klaver
2014-10-07 13:16 ` Guenter Roeck
2014-10-07 13:34 ` Frans Klaver
2014-10-09 8:37 ` Frans Klaver
2014-10-06 8:40 ` Frans Klaver [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1412584836-27677-3-git-send-email-frans.klaver@xsens.com \
--to=frans.klaver@xsens.com \
--cc=dbaryshkov@gmail.com \
--cc=devicetree@vger.kernel.org \
--cc=dwmw2@infradead.org \
--cc=grant.likely@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=linux@r-moll.nl \
--cc=robh+dt@kernel.org \
--cc=sre@kernel.org \
--cc=tjerk.hofmeijer@xsens.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).