[PATCH v4 1/1] dt-bindings: extcon: ptn5150: add child node port

[Frank Li <Frank.Li@nxp.com>]

Add child node 'port' to allow connect to usb controller to do role-switch
if id pin of ptn5150 have not connected to chip's usb ID function pin.

Fix below warning:
arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dtb: typec@3d: 'port' does not match any of the regexes: 'pinctrl-[0-9]+'
        from schema $id: http://devicetree.org/schemas/extcon/extcon-ptn5150.yaml

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
Change from v3 to v4
- remove extra empty line
- fix Indentation in example
Change from v2 to v3
- only add port to existed example.
Change from v1 to v2
- add example for id pin have not connect to main chip's id example.
- commit 095b96b2b fix "port" warning, but add new warning "connector" is
not exist. And follow commit revert this change.
690085d866f08 Revert "arm64: dts: imx8mn-var-som-symphony: Describe the USB-C connector
- I have not board in hand to debug why "connector" is not work.
---
 .../devicetree/bindings/extcon/extcon-ptn5150.yaml    | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml b/Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml
index d5cfa32ea52dd..072b3c0c5fd03 100644
--- a/Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml
+++ b/Documentation/devicetree/bindings/extcon/extcon-ptn5150.yaml
@@ -37,6 +37,11 @@ properties:
       GPIO pin (output) used to control VBUS. If skipped, no such control
       takes place.
 
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description:
+      A port node to link the usb controller for the dual role switch.
+
 required:
   - compatible
   - interrupts
@@ -58,5 +63,11 @@ examples:
             interrupt-parent = <&msmgpio>;
             interrupts = <78 IRQ_TYPE_LEVEL_HIGH>;
             vbus-gpios = <&msmgpio 148 GPIO_ACTIVE_HIGH>;
+
+            port {
+                endpoint {
+                    remote-endpoint = <&usb1_drd_sw>;
+                };
+            };
         };
     };
-- 
2.34.1