dt-bindings: usb: add common Type-C USB Switch schema

Several bindings implement parts of Type-C USB orientation and mode
switching, and retiming.  Keep definition of such properties in one
place, new usb-switch schema, to avoid duplicate defines.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240122094406.32198-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/usb/usb-switch.yaml b/Documentation/devicetree/bindings/usb/usb-switch.yaml
new file mode 100644
index 000000000000..da76118e73a5
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/usb-switch.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/usb-switch.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: USB Orientation and Mode Switches Common Properties
+
+maintainers:
+  - Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+description:
+  Common properties for devices handling USB mode and orientation switching.
+
+properties:
+  mode-switch:
+    description: Possible handler of altmode switching
+    type: boolean
+
+  orientation-switch:
+    description: Possible handler of orientation switching
+    type: boolean
+
+  retimer-switch:
+    description: Possible handler of SuperSpeed signals retiming
+    type: boolean
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description:
+      A port node to link the device to a TypeC controller for the purpose of
+      handling altmode muxing and orientation switching.
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Super Speed (SS) Output endpoint to the Type-C connector
+
+      port@1:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        description:
+          Super Speed (SS) Input endpoint from the Super-Speed PHY
+        unevaluatedProperties: false
+
+        properties:
+          endpoint:
+            $ref: /schemas/graph.yaml#/$defs/endpoint-base
+            unevaluatedProperties: false
+            properties:
+              data-lanes:
+                $ref: /schemas/types.yaml#/definitions/uint32-array
+                minItems: 1
+                maxItems: 8
+                uniqueItems: true
+                items:
+                  maximum: 8
+
+oneOf:
+  - required:
+      - port
+  - required:
+      - ports
+
+additionalProperties: true