Problem with USB3.0 in Nanopi NEO3 with PlutoSDR

Hello People.

First of all, thank you to all the people that puts work and time into this project. It's my first time posting here.

I've been trying to solve this problem by myself since this board it's unsupported now, but I had no luck.

The thing it's, I can't get the linux to recognize  properly the PlutoSDR, I get this errors in dmesg.

[   19.885514] usb 4-1: new high-speed USB device number 6 using xhci-hcd
[   20.035134] usb 4-1: Dual-Role OTG device on non-HNP port
[   20.035310] usb 4-1: set a_alt_hnp_support failed: -32
[   20.161463] usb 4-1: new high-speed USB device number 7 using xhci-hcd
[   20.311139] usb 4-1: Dual-Role OTG device on non-HNP port
[   20.311316] usb 4-1: set a_alt_hnp_support failed: -32
[   20.312182] usb usb4-port1: attempt power cycle
[   20.721465] usb 4-1: new high-speed USB device number 8 using xhci-hcd
[   20.743390] usb 4-1: Dual-Role OTG device on non-HNP port
[   20.743570] usb 4-1: set a_alt_hnp_support failed: -32
[   20.869463] usb 4-1: new high-speed USB device number 9 using xhci-hcd
[   20.891387] usb 4-1: Dual-Role OTG device on non-HNP port
[   20.891565] usb 4-1: set a_alt_hnp_support failed: -32
[   20.892491] usb usb4-port1: unable to enumerate USB device

This only happens with pluto, the board recognize properly other USB devices. I've try compiling other kernel, forcing DWC3 driver to be HOST only, but didn't change anything (and broke the LAN port 😧 ). The pluto has an OTG port but, for my understanding, should be in device mode because I'm using an standard micro USB cable.

I haven't try modifying the device tree since I don't understand really well all the options (I've used rk3328-nanopi-neo3-rev02.dtb and rk3328-nanopi-r2-rev20.dtb with same results)

I tested the compiled versions 20.05.9 - Linux 5.4.51, 20.08 - Linux 5.7.15 and 21.08.1 - Linux 5.13.12. Also tried upgrading (and fixing the dtb problem when upgrading) but also didn't help.

Hope someone can help me, I can provide more information if needed.

Thank you!

Edited June 7, 20224 yr by juani221