Name: Nvidia JETSON NANO
Brand: Nvidia
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Platform Adaptation and Bring-Up

Jetson Nano Platform Adaptation and Bring-Up Guide DA_09361-002 | 13

Through the schematic, you can conclude that for U27:

• The USB 2.0 signal pair is wired to UTMI pad 1 (USB2 port 1).

• The USB 3.0 signal pairs are wired to UPHY lane 6 (USB 3.0 port 0 according to

UPHY lane mapping).

The xusb_padctl Node

The device tree’s xusb_padctl node follows the conventions of pinctrl-

bindings.txt. It contains two groups of named pads and ports which describe USB2

and USB3 signals along with parameters and port numbers. The name of each parameter

description subnode in pads and ports must be in the form <type>-

<port_number>, where <type> is usb2 or usb3, and <port_number> is the

associated port number.

The pads Subnode

The properties of the pads subnode are:

• nvidia,function

A string containing the name of the function to mux to the pin or group. Must be

xusb.

The ports Subnode

• mode

A string that describes USB port capability. A port for USB2 must have this property.

It must be one of these values:

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