Hi @rudhi.tx
Here is the log when working
Verdin iMX8MP # usb start
starting USB...
Bus usb@38100000: Register 2000140 NbrPorts 2
Starting the controller
USB XHCI 1.10
Bus usb@38200000: Register 2000140 NbrPorts 2
Starting the controller
USB XHCI 1.10
scanning bus usb@38100000 for devices... 1 USB Device(s) found
scanning bus usb@38200000 for devices... 2 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found
Verdin iMX8MP # usb tree
USB device tree:
1 Hub (5 Gb/s, 0mA)
U-Boot XHCI Host Controller
1 Hub (5 Gb/s, 0mA)
| U-Boot XHCI Host Controller
|
+-2 Hub (480 Mb/s, 2mA)
Verdin iMX8MP # usb info
1: Hub, USB Revision 3.0
- U-Boot XHCI Host Controller
- Class: Hub
- PacketSize: 512 Configurations: 1
- Vendor: 0x0000 Product 0x0000 Version 1.0
Configuration: 1
- Interfaces: 1 Self Powered 0mA
Interface: 0
- Alternate Setting 0, Endpoints: 1
- Class Hub
- Endpoint 1 In Interrupt MaxPacket 8 Interval 255ms
1: Hub, USB Revision 3.0
- U-Boot XHCI Host Controller
- Class: Hub
- PacketSize: 512 Configurations: 1
- Vendor: 0x0000 Product 0x0000 Version 1.0
Configuration: 1
- Interfaces: 1 Self Powered 0mA
Interface: 0
- Alternate Setting 0, Endpoints: 1
- Class Hub
- Endpoint 1 In Interrupt MaxPacket 8 Interval 255ms
2: Hub, USB Revision 2.0
- Class: Hub
- PacketSize: 64 Configurations: 1
- Vendor: 0x0424 Product 0x2514 Version 11.179
Configuration: 1
- Interfaces: 1 Self Powered Remote Wakeup 2mA
Interface: 0
- Alternate Setting 0, Endpoints: 1
- Class Hub
- Endpoint 1 In Interrupt MaxPacket 1 Interval 12ms
- Endpoint 1 In Interrupt MaxPacket 1 Interval 12ms
Here the log for USB not working
Verdin iMX8MP # usb start
starting USB...
Bus usb@38100000: Register 2000140 NbrPorts 2
Starting the controller
USB XHCI 1.10
Bus usb@38200000: Register 2000140 NbrPorts 2
Starting the controller
USB XHCI 1.10
scanning bus usb@38100000 for devices... 1 USB Device(s) found
scanning bus usb@38200000 for devices... Device not responding to set address.
USB device not accepting new address (error=80000000)
2 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found
Verdin iMX8MP # usb tree
USB device tree:
1 Hub (5 Gb/s, 0mA)
U-Boot XHCI Host Controller
1 Hub (5 Gb/s, 0mA)
| U-Boot XHCI Host Controller
|
+-2 Hub (480 Mb/s, 2mA)
Verdin iMX8MP # usb info
1: Hub, USB Revision 3.0
- U-Boot XHCI Host Controller
- Class: Hub
- PacketSize: 512 Configurations: 1
- Vendor: 0x0000 Product 0x0000 Version 1.0
Configuration: 1
- Interfaces: 1 Self Powered 0mA
Interface: 0
- Alternate Setting 0, Endpoints: 1
- Class Hub
- Endpoint 1 In Interrupt MaxPacket 8 Interval 255ms
1: Hub, USB Revision 3.0
- U-Boot XHCI Host Controller
- Class: Hub
- PacketSize: 512 Configurations: 1
- Vendor: 0x0000 Product 0x0000 Version 1.0
Configuration: 1
- Interfaces: 1 Self Powered 0mA
Interface: 0
- Alternate Setting 0, Endpoints: 1
- Class Hub
- Endpoint 1 In Interrupt MaxPacket 8 Interval 255ms
2: Hub, USB Revision 2.0
- Class: Hub
- PacketSize: 64 Configurations: 1
- Vendor: 0x0424 Product 0x2514 Version 11.179
Configuration: 1
- Interfaces: 1 Self Powered Remote Wakeup 2mA
Interface: 0
- Alternate Setting 0, Endpoints: 1
- Class Hub
- Endpoint 1 In Interrupt MaxPacket 1 Interval 12ms
- Endpoint 1 In Interrupt MaxPacket 1 Interval 12ms
They’re the same.