linux-kernel - [PATCH V6 3/3] dt-bindings: serial: Add binding for UART pin swap

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Message-Id: <1588863647-17240-4-git-send-email-akashast@codeaurora.org>
Date:   Thu,  7 May 2020 20:30:47 +0530
From:   Akash Asthana <akashast@...eaurora.org>
To:     robh+dt@...nel.org, gregkh@...uxfoundation.org
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, mgautam@...eaurora.org,
        rojay@...eaurora.org, skakit@...eaurora.org, mka@...omium.org,
        Akash Asthana <akashast@...eaurora.org>
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 <akashast@...eaurora.org>
---
 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.
+
 if:
   required:
     - uart-has-rtscts
-- 
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