From: Nicolin Chen <nicoleotsuka@gmail.com>
To: jdelvare@suse.com, linux@roeck-us.net, robh+dt@kernel.org,
mark.rutland@arm.com
Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 1/2] dt-bindings: hwmon: ina3221: Add ti,single-shot property
Date: Fri, 4 Jan 2019 19:06:35 -0800 [thread overview]
Message-ID: <20190105030636.533-2-nicoleotsuka@gmail.com> (raw)
In-Reply-To: <20190105030636.533-1-nicoleotsuka@gmail.com>
By default, ina3221, as a hardware monitor, continuously measures
the inputs and generates corresponding data. However, for battery
powered devices, this mode might be power consuming.
This patch adds a "ti,single-shot" property to allow changing the
default continuous mode to single-shot operating mode.
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
---
Documentation/devicetree/bindings/hwmon/ina3221.txt | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/Documentation/devicetree/bindings/hwmon/ina3221.txt b/Documentation/devicetree/bindings/hwmon/ina3221.txt
index a7b25caa2b8e..fa63b6171407 100644
--- a/Documentation/devicetree/bindings/hwmon/ina3221.txt
+++ b/Documentation/devicetree/bindings/hwmon/ina3221.txt
@@ -6,6 +6,16 @@ Texas Instruments INA3221 Device Tree Bindings
- reg: I2C address
Optional properties:
+ - ti,single-shot: This chip has two power modes: single-shot (chip takes one
+ measurement and then shuts itself down) and continuous (
+ chip takes continuous measurements). The continuous mode is
+ more reliable and suitable for hardware monitor type device,
+ but the single-shot mode is more power-friendly and useful
+ for battery-powered device which cares power consumptions
+ while still needs some measurements occasionally.
+ If this property is present, the single-shot mode will be
+ used, instead of the default continuous one for monitoring.
+
= The node contains optional child nodes for three channels =
= Each child node describes the information of input source =
--
2.17.1
next prev parent reply other threads:[~2019-01-05 3:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-05 3:06 [PATCH v2 0/2] hwmon (ina3221) Add single-shot mode support Nicolin Chen
2019-01-05 3:06 ` Nicolin Chen [this message]
2019-01-11 21:34 ` [PATCH v2 1/2] dt-bindings: hwmon: ina3221: Add ti,single-shot property Rob Herring
2019-01-05 3:06 ` [PATCH v2 2/2] hwmon: (ina3221) Implement ti,single-shot DT property Nicolin Chen
2019-01-07 19:35 ` Guenter Roeck
2019-01-17 22:30 ` Nicolin Chen
2019-01-17 22:58 ` Guenter Roeck
2019-01-17 23:02 ` Nicolin Chen
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