Microchip USB5734 hub design

We are designing a board and replaced the RTS5489 USB hub with the USB5734 . The design uses the same usb lanes as per the RTS5489 therefore the dsti files should not require a change as per USB porting guide. The kernel seems to recognise hub (see below) however the hub ports are all inactive and ‘lsusb -v -s’ just hangs. Apart from the dsti files are there any other changes that need to be made?

[    2.267714] usb 2-3: new SuperSpeed USB device number 2 using tegra-xusb
[    2.287966] usb 2-3: New USB device found, idVendor=0424, idProduct=5734
[    2.287974] usb 2-3: New USB device strings: Mfr=2, Product=3, SerialNumber=0
[    2.287978] usb 2-3: Product: USB5734
[    2.287982] usb 2-3: Manufacturer: Microchip Tech
[    2.290034] hub 2-3:1.0: USB hub found
[    2.290412] hub 2-3:1.0: 5 ports detected

There should be no change needed. Please contact the hub vendor for help.