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i2c: document binding for multi-master case

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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>
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Wolfram Sang 2015-12-23 17:56:32 +01:00 committed by Wolfram Sang
parent c20821a7f0
commit 0c739738a0
1 changed files with 5 additions and 0 deletions
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Documentation/devicetree/bindings/i2c/i2c.txt
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@ -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.