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| author | Wolfram Sang <wsa@the-dreams.de> | 2016-08-25 19:27:40 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2016-09-08 16:57:14 +0200 |
| commit | 30851a7c2155d0b321485e66386ea99191d8b3f5 (patch) | |
| tree | c4d9cd960ee59266338b7b3f645151c2287d2314 | |
| parent | e35478eac030990e23a56bf11dc074c5a069124a (diff) | |
| download | linux-stable-30851a7c2155d0b321485e66386ea99191d8b3f5.tar.gz linux-stable-30851a7c2155d0b321485e66386ea99191d8b3f5.tar.bz2 linux-stable-30851a7c2155d0b321485e66386ea99191d8b3f5.zip | |
Documentation: i2c: slave-interface: add note for driver development
Make it clear that adding slave support shall not disable master
functionality. We can have both, so we should.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| -rw-r--r-- | Documentation/i2c/slave-interface | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/i2c/slave-interface b/Documentation/i2c/slave-interface index 80807adb8ded..7e2a228f21bc 100644 --- a/Documentation/i2c/slave-interface +++ b/Documentation/i2c/slave-interface @@ -145,6 +145,11 @@ If you want to add slave support to the bus driver: * Catch the slave interrupts and send appropriate i2c_slave_events to the backend. +Note that most hardware supports being master _and_ slave on the same bus. So, +if you extend a bus driver, please make sure that the driver supports that as +well. In almost all cases, slave support does not need to disable the master +functionality. + Check the i2c-rcar driver as an example. |