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TI HD3SS3220 TypeC DRP Port Controller.

Required properties:
 - compatible: Must be "ti,hd3ss3220".
 - reg: I2C slave address, must be 0x47 or 0x67 based on ADDR pin.
 - interrupts: An interrupt specifier.

Required sub-node:
 - connector: The "usb-c-connector" attached to the hd3ss3220 chip. The
   bindings of the connector node are specified in:

	Documentation/devicetree/bindings/connector/usb-connector.txt

Example:
hd3ss3220@47 {
	compatible = "ti,hd3ss3220";
	reg = <0x47>;
	interrupt-parent = <&gpio6>;
	interrupts = <3 IRQ_TYPE_LEVEL_LOW>;

	connector {
		compatible = "usb-c-connector";
		label = "USB-C";
		data-role = "dual";

		ports {
			#address-cells = <1>;
			#size-cells = <0>;

			port@1 {
				reg = <1>;
				hd3ss3220_ep: endpoint {
					remote-endpoint = <&usb3_role_switch>;
				};
			};
		};
	};
};