OK, some success (at least I think so).

I used a wall-powered hub with USB memory stick and external USB hard drive. I applied 3.5V from TWL4030 to VBUS and set Host mode of operations in ARM CPU USB.

The result - in both cases a lot of communications (TX interrupts but no RX - ?) and finally the message -

Nokia-N900-42-11 kernel: [...] usb 1-1: device v04b4 p6560 is not supported <---- this is for USB Hub with USB memory stick

Nokia-N900-42-11 kernel: [...] usb 1-1: device v0bc2 p3000 is not supported <---- this is for USB hard disk.

EDIT: verified via SuSE notebook - Hard Disk is 0bc2:3000 Seagate RSS LLC, and HUB - 04b4:6560 Cypress Semiconductor Corp. CY7C65640 USB-2.0 "TetraHub"

Taking into account the different Vendor (v*) and Product (p*) values and the very remarkable Product value for HDisk - p3000, I assume that it is values read from devices.


I looked briefly in code - yes, there is no support for that kind of devices. But it should be supported via device class - hub at least for sure. So, some software debug print is needed to find out the whole info from device... tomorrow.