i2c: document binding for multi-master case

[cascardo/linux.git] / Documentation / devicetree / bindings / i2c / i2c.txt

diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
index a00219f..c8d977e 100644 (file)
--- a/Documentation/devicetree/bindings/i2c/i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c.txt
@@ -54,6 +54,11 @@ wants to support one of the below features, it should adapt the bindings below.
        "irq" and "wakeup" names are recognized by I2C core, other names are
        left to individual drivers.
 
+- multi-master
+       states that there is another master active on this bus. The OS can use
+       this information to adapt power management to keep the arbitration awake
+       all the time, for example.
+
 - wakeup-source
        device can be used as a wakeup source.