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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
Message-ID: <20190105030636.533-2-nicoleotsuka@gmail.com> (raw)
Message-ID: <20190105030635.C_TTAf7rjCRxebc1mEK18WpanIz7ZrDDhJ4VEtcvgX0@z> (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


  parent reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-05  3:07 [PATCH v2 0/2] hwmon (ina3221) Add single-shot mode support Nicolin Chen
2019-01-05  3:06 ` Nicolin Chen
2019-01-05  3:06 ` [PATCH v2 2/2] hwmon: (ina3221) Implement ti,single-shot DT property Nicolin Chen
2019-01-05  3:06   ` 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
2019-01-05  3:07 ` Nicolin Chen [this message]
2019-01-05  3:06   ` [PATCH v2 1/2] dt-bindings: hwmon: ina3221: Add ti,single-shot property Nicolin Chen
2019-01-11 21:34   ` Rob Herring

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