[PATCH 2/7] dt-bindings: soc: ti: pruss: Add documentation for PRU UART support

[Judith Mendez <jm@ti.com>]

Add documentation for PRU UART node which is for PRU serial UART
based-off the industry standard TL16C550 asynchronous communications
element.

Signed-off-by: Judith Mendez <jm@ti.com>
---
 Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml b/Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml
index 927b3200e29e..54397297cbf5 100644
--- a/Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml
+++ b/Documentation/devicetree/bindings/soc/ti/ti,pruss.yaml
@@ -324,6 +324,13 @@ patternProperties:
     $ref: /schemas/net/ti,davinci-mdio.yaml#
     type: object
 
+  serial@[a-f0-9]+$:
+    description: |
+      Serial UART sub-module. A PRUSS can have a serial UART sub-module based
+      on the industry standard TL16C550 asynchronous communications element.
+    $ref: /schemas/serial/ti,pruss-uart.yaml#
+    type: object
+
   "^(pru|rtu|txpru)@[0-9a-f]+$":
     description: |
       PRU Node. Each PRUSS has dual PRU cores, each represented as a RemoteProc
-- 
2.49.0