Usb-otg mode switchover

[Jodan]

Hi,I had the usb-otg on my custom board with JetPack 5.0.2，However, the host driver/device driver mode switch cannot be implemented.
The USB2.0 signal pins D+/D− F12 (USB0_P) and F13 (USB0_N) , ID pin is designed as an internal pull high (logical high),VBUS_DETECTpin is designed as an internal pull high (logical high).

The following code works in device driver mode.

		ports {
			usb2-0 {
				mode = "otg";
				status = "okay";
#if TEGRA_XUSB_DT_VERSION >= DT_VERSION_3				
				usb-role-switch;
				connector {
					compatible = "usb-b-connector", "gpio-usb-b-connector";
					label = "micro-USB";
					type = "micro";
					vbus-gpio = <&tegra_main_gpio TEGRA234_MAIN_GPIO(G, 3) GPIO_ACTIVE_LOW>;
					id-gpio = <&tegra_main_gpio TEGRA234_MAIN_GPIO(G, 7) GPIO_ACTIVE_HIGH>;
				};
#endif
				port {
					usb_role_switch0: endpoint {
						remote-endpoint = <&ucsi_ccg_p1>;
					};
				};
			};
			usb2-1 {
				mode = "host";
				status = "okay";
			};
			usb2-2 {
				mode = "host";
				status = "okay";
			};
			usb2-3 {
				mode = "host";
				status = "okay";
			};
			usb3-0 {
				nvidia,usb2-companion = <1>;
				status = "okay";
			};
			usb3-1 {
				nvidia,usb2-companion = <0>;
				status = "okay";
			};
			usb3-2 {
				nvidia,usb2-companion = <3>;
				status = "okay";
			};
		};
	};

	tegra_xudc: xudc@3550000 {
		status = "okay";
		phys = <&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-0}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-1}>;
		phy-names = "usb2-0", "usb3-1";
		nvidia,xusb-padctl = <&xusb_padctl>;
		nvidia,boost_cpu_freq = <1200>;
	};

	tegra_xhci: xhci@3610000 {
		status = "okay";
		phys = <&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-0}>,
			<&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-1}>,
			<&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-2}>,
			<&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-3}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-0}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-1}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-2}>;
		phy-names = "usb2-0", "usb2-1", "usb2-2", "usb2-3",
			"usb3-0", "usb3-1", "usb3-2";
		nvidia,xusb-padctl = <&xusb_padctl>;
	};

If the tegra_xudc: xudc@3550000 device node is masked, it is the host driver mode.

	tegra_xudc: xudc@3550000 {
		status = "disabled";
		phys = <&{/xusb_padctl@3520000/pads/usb2/lanes/usb2-0}>,
			<&{/xusb_padctl@3520000/pads/usb3/lanes/usb3-1}>;
		phy-names = "usb2-0", "usb3-1";
		nvidia,xusb-padctl = <&xusb_padctl>;
		nvidia,boost_cpu_freq = <1200>;
	};

The preceding two modes work in only one mode and cannot switch between host driver and device driver mode，How can we solve this problem?

thanks.

[DaneLLL]

Hi,
It is same design as Orin developer kit? A type-C port with PD controller. Would like to know if you have same design on your custom board.

[Jodan]

Unlike the Orin developer kit design, it is similar to the design in the picture.

[DaneLLL]

Hi,
It seems to be a micro-B port instead of a type-C port. Not sure if we understand it could correctly?

[Jodan]

Yes, my problem should be solved, thank you!