|author||Wolfram Sang <email@example.com>||2016-08-25 19:27:40 +0200|
|committer||Wolfram Sang <firstname.lastname@example.org>||2016-09-08 16:57:14 +0200|
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 <email@example.com>
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/i2c/slave-interface b/Documentation/i2c/slave-interface
index 80807adb8ded..7e2a228f21bc 100644
@@ -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.