dt-bindings: usb: Add Cypress cypd4226 Type-C controller

Add the device-tree binding documentation for Cypress cypd4226 dual
Type-C controller.
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230131175748.256423-2-jonathanh@nvidia.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/cypress,cypd4226.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cypress cypd4226 Type-C Controller
+
+maintainers:
+  - Wayne Chang <waynec@nvidia.com>
+
+description:
+  The Cypress cypd4226 is a dual Type-C controller that is controlled
+  via an I2C interface.
+
+properties:
+  compatible:
+    const: cypress,cypd4226
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+  reg:
+    const: 0x08
+
+  interrupts:
+    items:
+      - description: cypd4226 host interrupt
+
+  firmware-name:
+    enum:
+      - nvidia,gpu
+      - nvidia,jetson-agx-xavier
+    description: |
+      The name of the CCGx firmware built for product series.
+      should be set one of following:
+      - "nvidia,gpu" for the NVIDIA RTX product series
+      - "nvidia,jetson-agx-xavier" for the NVIDIA Jetson product series
+
+patternProperties:
+  '^connector@[01]$':
+    $ref: /schemas/connector/usb-connector.yaml#
+    unevaluatedProperties: false
+    properties:
+      reg:
+        maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+anyOf:
+  - required:
+      - connector@0
+  - required:
+      - connector@1
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/tegra194-gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      #interrupt-cells = <2>;
+
+      typec@8 {
+        compatible = "cypress,cypd4226";
+        reg = <0x08>;
+        interrupt-parent = <&gpio_aon>;
+        interrupts = <TEGRA194_AON_GPIO(BB, 2) IRQ_TYPE_LEVEL_LOW>;
+        firmware-name = "nvidia,jetson-agx-xavier";
+        #address-cells = <1>;
+        #size-cells = <0>;
+        connector@0 {
+          compatible = "usb-c-connector";
+          reg = <0>;
+          label = "USB-C";
+          data-role = "dual";
+          ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            port@0 {
+              reg = <0>;
+              endpoint {
+                remote-endpoint = <&usb_role_switch0>;
+              };
+            };
+          };
+        };
+      };
+    };