diff --git a/Documentation/devicetree/bindings/hwmon/ina3221.txt b/Documentation/devicetree/bindings/hwmon/ina3221.txt
index a7b25caa2b8e360f96c6b3f18e92308e72e72ca4..fa63b6171407f1afd144df0b5095b54aebc8a136 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 =