Problems encountered with USB3 port 2 (UPHY_T/RX20_N/P) multiplexed to USB

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
1

Hello nvidia engineers:
I’m using USB3 port 2 (UPHY_T/RX20_N/P) to connect a 5G module (AG550).
But I can’t see my 5G module using lsusb.
nvidia@nvidia:~$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

ODMDATA configuration:
ODMDATA=“gbe-uphy-config-0,hsstp-lane-map-3,nvhs-uphy-config-0,hsio-uphy-config-0”;

What is the default configuration as well as the status of NVIDIA’s default USB3 port x by default?
Do I still need to modify the device tree to recognize the usb device correctly?

xusb_padctl: xusb_padctl@3520000 {
	status = "okay";
	pads {
		usb2 {
			lanes {
				usb2-0 {
					nvidia,function = "xusb";
					status = "okay";
				};
				usb2-1 {
					nvidia,function = "xusb";
					status = "okay";
				};
				usb2-2 {
					nvidia,function = "xusb";
					status = "disabled";
				};
				usb2-3 {
					nvidia,function = "xusb";
					status = "okay";
				};
			};
		};
		usb3 {
			lanes {
				usb3-0 {
					nvidia,function = "xusb";
					status = "okay";
				};
				usb3-1 {
					nvidia,function = "xusb";
					status = "okay";
				};
				usb3-2 {
					nvidia,function = "xusb";
					status = "okay";
				};
			};
		};
	};

	ports {
		usb2-0 {
			mode = "otg";
			usb-role-switch;
			status = "okay";
			port {
				usb_role_switch0: endpoint {
					remote-endpoint = <&ucsi_ccg_p1>;
				};
			};
		};

		usb2-1 {
			mode = "host";
			status = "okay";
		};
		usb2-2 {
			mode = "host";
			status = "disabled";
		};
		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>;
};
3

Hi,

Default configuration is usb2-3 along with UPHY_RX20_N connected to a USB type A hub on devkit.

It could be hardware design mismatch between your board and device tree.

4

Hi，
How do I change to USB 3.2 (P2)?

5

HI,

I don’t know what you are talking about. Default configuration is already using usb3.2 (P2).

7

Do you mean that the USB3.2 P2 feature is enabled by default?
Just need me to connect the device to the USB3 port 2 (UPHY_T/RX20_N/P) pins for the usb device to be detected properly?

8

On Orin AGX devkit with this schematic,

Default software already enabled P0,P1,P2 usb ports.

P2 is used for a type A hub on devkit.

If your device cannot get detected, it could be hardware problem or mismatch between your hardware and software device tree.

9

Thank you for your reply.
Can you help me to see if the device tree configuration I posted below matches the hardware?

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2023-11-17 16-18-32屏幕截图

xusb_padctl: xusb_padctl@3520000 {
	status = "okay";
	pads {
		usb2 {
			lanes {
				usb2-0 {
					nvidia,function = "xusb";
					status = "okay";
				};
				usb2-1 {
					nvidia,function = "xusb";
					status = "okay";
				};
				usb2-2 {
					nvidia,function = "xusb";
					status = "disabled";
				};
				usb2-3 {
					nvidia,function = "xusb";
					status = "okay";
				};
			};
		};
		usb3 {
			lanes {
				usb3-0 {
					nvidia,function = "xusb";
					status = "okay";
				};
				usb3-1 {
					nvidia,function = "xusb";
					status = "okay";
				};
				usb3-2 {
					nvidia,function = "xusb";
					status = "okay";
				};
			};
		};
	};

	ports {
		usb2-0 {
			mode = "otg";
			usb-role-switch;
			status = "okay";
			port {
				usb_role_switch0: endpoint {
					remote-endpoint = <&ucsi_ccg_p1>;
				};
			};
		};

		usb2-1 {
			mode = "host";
			status = "okay";
		};
		usb2-2 {
			mode = "host";
			status = "disabled";
		};
		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>;
};
10

Why do you think this picture can help?
You should post the whole usb port design from module side to connector side.

11

1/2 picture above is my orin interface.
The 3 picture is the USB device plugged into the orin.

There is no other circuitry.

12

Then your design is obviously wrong. Please go to read the design guide document.

13

Hi.
Thanks for the reply, I found out where.

14

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