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Date:   Thu,  7 May 2020 20:30:47 +0530
From:   Akash Asthana <>
        Akash Asthana <>
Subject: [PATCH V6 3/3] dt-bindings: serial: Add binding for UART pin swap

Add documentation to support RX-TX & CTS-RTS GPIO pin swap in HW.

Signed-off-by: Akash Asthana <>
 Documentation/devicetree/bindings/serial/serial.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/serial.yaml b/Documentation/devicetree/bindings/serial/serial.yaml
index 53204d9..e657dd6 100644
--- a/Documentation/devicetree/bindings/serial/serial.yaml
+++ b/Documentation/devicetree/bindings/serial/serial.yaml
@@ -67,6 +67,12 @@ properties:
       (wired and enabled by pinmux configuration).  This depends on both the
       UART hardware and the board wiring.
+  rx-tx-swap:
+    description: RX and TX pins are swapped.
+  cts-rts-swap:
+    description: CTS and RTS pins are swapped.
     - uart-has-rtscts
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