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-rw-r--r--dts/Bindings/serial/rs485.txt5
1 files changed, 2 insertions, 3 deletions
diff --git a/dts/Bindings/serial/rs485.txt b/dts/Bindings/serial/rs485.txt
index 32b1fa1f2a..b8415936df 100644
--- a/dts/Bindings/serial/rs485.txt
+++ b/dts/Bindings/serial/rs485.txt
@@ -5,14 +5,13 @@ the built-in half-duplex mode.
The properties described hereafter shall be given to a half-duplex capable
UART node.
-Required properties:
+Optional properties:
- rs485-rts-delay: prop-encoded-array <a b> where:
* a is the delay between rts signal and beginning of data sent in milliseconds.
it corresponds to the delay before sending data.
* b is the delay between end of data sent and rts signal in milliseconds
it corresponds to the delay after sending data and actual release of the line.
-
-Optional properties:
+ If this property is not specified, <0 0> is assumed.
- linux,rs485-enabled-at-boot-time: empty property telling to enable the rs485
feature at boot time. It can be disabled later with proper ioctl.
- rs485-rx-during-tx: empty property that enables the receiving of data even