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authorWolfram Sang <>2016-08-25 19:27:40 +0200
committerWolfram Sang <>2016-09-08 16:57:14 +0200
commit30851a7c2155d0b321485e66386ea99191d8b3f5 (patch)
parente35478eac030990e23a56bf11dc074c5a069124a (diff)
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 <>
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
Check the i2c-rcar driver as an example.