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authorWolfram Sang <wsa+renesas@sang-engineering.com>2015-12-23 17:56:32 +0100
committerWolfram Sang <wsa@the-dreams.de>2016-01-02 22:10:32 +0100
commit0c739738a0eea868655ef26263d5350e6ab8cc69 (patch)
tree7a93bc1d1c6a4abe84ea15fe6a57f5a09182bb40 /Documentation/devicetree/bindings/i2c
parentc20821a7f0a55377eccd88c89bd76a2cca22a1b4 (diff)
i2c: document binding for multi-master case
We need this binding because some I2C master drivers will need to adapt their PM settings for the arbitration circuitry. Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation/devicetree/bindings/i2c')
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
index a00219f5ee07..c8d977ed847f 100644
--- 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.