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-rw-r--r--Documentation/serial/serial-rs485.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt
index c8878f821d1..079cb3df62c 100644
--- a/Documentation/serial/serial-rs485.txt
+++ b/Documentation/serial/serial-rs485.txt
@@ -28,6 +28,10 @@
RS485 communications. This data structure is used to set and configure RS485
parameters in the platform data and in ioctls.
+ The device tree can also provide RS485 boot time parameters (see [2]
+ for bindings). The driver is in charge of filling this data structure from
+ the values given by the device tree.
+
Any driver for devices capable of working both as RS232 and RS485 should
provide at least the following ioctls:
@@ -121,3 +125,4 @@
5. REFERENCES
[1] include/linux/serial.h
+ [2] Documentation/devicetree/bindings/serial/rs485.txt