TypeC OTG Slave mode not working

[qjmiao]

I connected my computer to the front type-c port of the 32gb version devkit, but the computer can’t find the devkit as a usb device. It’s ok with an old 16gb version devkit.

Here is some dmesg output:

[ 367.503737] tegra-xudc-new 3550000.xudc: vbus state: 1
[ 367.503753] tegra-xudc-new 3550000.xudc: exiting ELPG
[ 367.509759] tegra-xudc-new 3550000.xudc: exiting ELPG done
[ 367.509790] tegra-xudc-new 3550000.xudc: device mode on: 0
[ 367.509812] tegra-xudc-new 3550000.xudc: active: 0 => 1
[ 367.901663] ucsi_ccg 1-0008: port0 evt: Hard Reset Sent to Port Partner
[ 369.048878] ucsi_ccg 1-0008: port0 evt: Hard Reset Sent to Port Partner
[ 370.196282] ucsi_ccg 1-0008: port0 evt: Hard Reset Sent to Port Partner
[ 371.343211] ucsi_ccg 1-0008: port0 evt: Source Disabled State Entered

If I power up the devkit into recovery mode, I can find the usb device by running lsusb command.

It’s a hw issue or sw issue?
How can I further dig into this problem?

[DaneLLL]

Hi,
Only J512 port supports OTG. Please check if you connect to the port.
You can refer to

USB3.0 device

Hi, Be default, device mode is supported in J512(type-C) port. You can connect Xavier to host Ubuntu PC with a type-A to type-C cable and Xavier will enter device mode. Certain READMEs pop up on host PC and you may follow the guidance. Please note that uvc gadget driver is not supported due to we do not support isoch ep in device mode while uvc gadget driver does not implement bulk ep but isoch ep.

[qjmiao]

Hi DaneLLL,

I reflashed my devkit and now it is ok with otg port.

Thanks very much