From: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>

A serial controller could be connected to an external connector like PCIe
M.2 for controlling the serial interface of the card. Hence, document the
OF graph port.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
---
 Documentation/devicetree/bindings/serial/serial.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/serial.yaml b/Documentation/devicetree/bindings/serial/serial.yaml
index 6aa9cfae417b..96eb1de8771e 100644
--- a/Documentation/devicetree/bindings/serial/serial.yaml
+++ b/Documentation/devicetree/bindings/serial/serial.yaml
@@ -87,6 +87,9 @@ properties:
     description:
       TX FIFO threshold configuration (in bytes).
 
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+
 patternProperties:
   "^(bluetooth|bluetooth-gnss|embedded-controller|gnss|gps|mcu|onewire)$":
     if:

-- 
2.48.1