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| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2015-12-23 16:56:32 (GMT) |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2016-01-02 21:10:32 (GMT) |
| commit | 0c739738a0eea868655ef26263d5350e6ab8cc69 (patch) | |
| tree | 7a93bc1d1c6a4abe84ea15fe6a57f5a09182bb40 | |
| parent | c20821a7f0a55377eccd88c89bd76a2cca22a1b4 (diff) | |
| download | linux-0c739738a0eea868655ef26263d5350e6ab8cc69.tar.xz | |
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>
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index a00219f..c8d977e 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. |