diff options
| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2020-05-27 13:30:39 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2020-05-30 23:11:56 +0200 |
| commit | fad5972a1eca71c797e2e209ec403ade9bf69384 (patch) | |
| tree | 984062417213dd979d743931e23c3eeb5334491f /Documentation | |
| parent | fcb82a939df86018641f38124cb9a7811a5f8505 (diff) | |
i2c: add 'single-master' property to generic bindings
It is useful to know if we are the only master on a given bus. Because
this is a HW description of the bus, add it to the generic bindings.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index 819436b48fae..438ae123107e 100644 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c.txt @@ -70,7 +70,12 @@ wants to support one of the below features, it should adapt these bindings. - 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. + all the time, for example. Can not be combined with 'single-master'. + +- single-master + states that there is no other master active on this bus. The OS can use + this information to detect a stalled bus more reliably, for example. + Can not be combined with 'multi-master'. Required properties (per child device) -------------------------------------- |