This adds a new DT property to define the index used by a multiplexer to
select the device.

Signed-off-by: Ulrich Hecht <[email protected]>
---
 Documentation/devicetree/bindings/serial/slave-device.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/slave-device.txt 
b/Documentation/devicetree/bindings/serial/slave-device.txt
index 40110e0..f9b0783 100644
--- a/Documentation/devicetree/bindings/serial/slave-device.txt
+++ b/Documentation/devicetree/bindings/serial/slave-device.txt
@@ -30,6 +30,8 @@ Optional Properties:
                      way to reset the device
                    * device baud rate is configured by its firmware but
                      there is no way to request the actual settings
+- reg          : Index used to select the device if it is controlled by a
+                 multiplexer.
 
 Example:
 
-- 
2.7.4

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