USB
接口说明
小技巧
采用我司刷写的镜像无需修改设备树即可支持前面板的USB接口支持3.0速率；
采用英伟达SDKM刷写官方镜像的，可以通过手工修改设备树源码的方式支持；
3xUSB3.0&2.0（Type-A）
1xUSB2.0（Type-A）
电气特性
USB接口最大电流2A限流
位号 |
信号线 |
接口 |
orin nano/nx |
我司设备树 |
nvidia官方设备树默认 |
|---|---|---|---|---|---|
左上 |
USB 3.0 & 2.0 |
TYPE-A |
P2 |
Y |
N |
左下 |
USB 3.0 & 2.0 |
TYPE-A |
P1 |
Y |
N |
右上 |
USB 3.0 & 2.0 |
TYPE-A |
P0 |
Y |
|
右下 |
USB 2.0 |
TYPE-A |
N/A |
N/A |
N/A |
支持列表
符合USB TYPE-A标准均可使用
前面板USB3.0
使用nvidia的SDKM刷写官方镜像适配orin nano/nx系列模组，默认情况下仅右上USB接口支持USB3.0速率。 如下配置案例以orin nano 8gb为例（其他同系列模组操作方式相同）开启左下和左上两个接口的USB3.0速率支持。
进入系统的dtb目录
sudo su
cd /boot/dtb/
dtc -I dtb -O dts kernel_tegra234-p3768-0000+p3767-0003-nv.dtb > kernel_tegra234-p3768-0000+p3767-0003-nv.dts
cp kernel_tegra234-p3768-0000+p3767-0003-nv.dts c1201.dts
vi c1201.dts
采用vi,gedit等任何你熟悉的方式修改设备树
修改设备树
小技巧
-表示删除该行
+表示添加该行
root@ubuntu:/boot/dtb# diff -U 10 kernel_tegra234-p3768-0000+p3767-0003-nv.dts c1201.dts
--- kernel_tegra234-p3768-0000+p3767-0003-nv.dts 2026-07-11 17:20:14.131908059 +0800
+++ c1201.dts 2026-07-11 17:26:09.286524105 +0800
@@ -3912,48 +3912,42 @@
usb3-1 {
nvidia,function = "xusb";
status = "okay";
#phy-cells = <0x00>;
phandle = <0xfc>;
};
usb3-2 {
nvidia,function = "xusb";
- status = "disabled";
+ status = "okay";
#phy-cells = <0x00>;
+ phandle = <0x5ff>;
};
usb3-3 {
nvidia,function = "xusb";
status = "disabled";
#phy-cells = <0x00>;
};
};
};
};
ports {
usb2-0 {
status = "okay";
mode = "otg";
vbus-supply = <0xf7>;
usb-role-switch;
usb2-1 {
status = "okay";
mode = "host";
vbus-supply = <0xf9>;
};
usb2-2 {
status = "okay";
@@ -3965,25 +3959,26 @@
status = "disabled";
};
usb3-0 {
status = "okay";
nvidia,usb2-companion = <0x01>;
};
usb3-1 {
status = "okay";
- nvidia,usb2-companion = <0x00>;
+ nvidia,usb2-companion = <0x01>;
};
usb3-2 {
- status = "disabled";
+ status = "okay";
+ nvidia,usb2-companion = <0x01>;
};
usb3-3 {
status = "disabled";
};
};
};
usb@3550000 {
compatible = "nvidia,tegra234-xudc";
@@ -3993,40 +3988,40 @@
clocks = <0x03 0x109 0x03 0x10c 0x03 0x113 0x03 0x110>;
clock-names = "dev\0ss\0ss_src\0fs_src";
interconnects = <0x57 0x4c 0x58 0x57 0x4d 0x58>;
interconnect-names = "dma-mem\0write";
iommus = <0xf0 0x0f>;
power-domains = <0x03 0x0b 0x03 0x0a>;
power-domain-names = "dev\0ss";
nvidia,xusb-padctl = <0xfa>;
dma-coherent;
status = "okay";
- phys = <0xfb 0xfc>;
- phy-names = "usb2-0\0usb3-0";
+ phys = <0xfb>;
+ phy-names = "usb2-0";
};
usb@3610000 {
compatible = "nvidia,tegra234-xusb";
reg = <0x00 0x3610000 0x00 0x40000 0x00 0x3600000 0x00 0x10000 0x00 0x3650000 0x00 0x10000>;
reg-names = "hcd\0fpci\0bar2";
clocks = <0x03 0x10b 0x03 0x10d 0x03 0x10c 0x03 0x113 0x03 0x0e 0x03 0x110 0x03 0x67 0x03 0x0e 0x03 0x64>;
clock-names = "xusb_host\0xusb_falcon_src\0xusb_ss\0xusb_ss_src\0xusb_hs_src\0xusb_fs_src\0pll_u_480m\0clk_m\0pll_e";
interconnects = <0x57 0x4a 0x58 0x57 0x4b 0x58>;
interconnect-names = "dma-mem\0write";
iommus = <0xf0 0x0e>;
power-domains = <0x03 0x0c 0x03 0x0a>;
power-domain-names = "xusb_host\0xusb_ss";
nvidia,xusb-padctl = <0xfa>;
dma-coherent;
status = "okay";
- phys = <0xfb 0xfd 0xfe 0xff 0xfc>;
- phy-names = "usb2-0\0usb2-1\0usb2-2\0usb3-0\0usb3-1";
+ phys = <0xfb 0xfd 0xfe 0xff 0xfc 0x5ff>;
+ phy-names = "usb2-0\0usb2-1\0usb2-2\0usb3-0\0usb3-1\0usb3-2";
interrupts-extended = <0x01 0x00 0xa3 0x04 0x01 0x00 0xa4 0x04 0x100 0x4c 0x04 0x100 0x4d 0x04 0x100 0x4e 0x04 0x100 0x4f 0x04 0x100 0x50 0x04 0x100 0x51 0x04 0x100 0x52 0x04>;
interrupt-names = "xhci\0mbox\0wake0\0wake1\0wake2\0wake3\0wake4\0wake5\0wake6";
};
fuse@3810000 {
compatible = "nvidia,tegra234-efuse";
reg = <0x00 0x3810000 0x00 0x10000>;
clocks = <0x03 0x28>;
clock-names = "fuse";
};
修改完设备树的dts源码后，再转为dtb文件
dtc -I dts -O dtb c1201.dts > c1201.dtb
设备树生效
注意
必须在启动配置中显式添加FDT字段强制使用指定的设备树进行内核启动的配置读取。 否则系统将仍然使用内部保存的设备树配置文件（烧写时）的作为启动配置。
vi /boot/extlinux/extlinux.conf
在其中添加FDT指定设备树
root@ubuntu:/boot/dtb# cat /boot/extlinux/extlinux.conf
TIMEOUT 30
DEFAULT primary
MENU TITLE L4T boot options
LABEL primary
MENU LABEL primary kernel
LINUX /boot/Image
INITRD /boot/initrd
FDT /boot/dtb/c1201.dtb
APPEND ${cbootargs} root=PARTUUID=6aedec5e-dea4-433a-817a-bf041d51989d rw rootwait rootfstype=ext4 mminit_loglevel=4 console=ttyTCU0,115200 firmware_class.path=/etc/firmware fbcon=map:0 video=efifb:off console=tty0 efi=runtime pci=pcie_bus_perf nvme.use_threaded_interrupts=1 nv-auto-config
reboot系统后，前面板的USB接口的：左下，左上即支持USB3.0速率。