How to enable USB3 interface as a Host

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
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4

Hi DaneLLL,

Thank you for replying. I’ve been trying to modify the device tree similar to what we found in the following post.

Our modifications are as follows.

1. under ucsi_ccg 
        ucsi_ccg: ucsi_ccg@8 {
-            status = "okay";
+           status = "disabled";

2. under xusb_padctl@3520000, made sure mode is set to "host" and usb3 ports need its companion usb2 port.
    xusb_padctl: xusb_padctl@3520000 {
......
        ports {
            usb2-3 {
               mode = "host";
               status = "okay";
            };
            usb3-3 {
		status = "okay";
		nvidia,usb2-companion = <0x03>; 
                usb3-gen1-only = <0x01>
	    };
        };

3. Removed all "extcon*" property under xhci@3610000 and xudc@3550000.

We could compile the dts file to a dtb file. However, I am not sure how to use dd or flash.sh so that our modified dtb is applied.