Hi!
We use beagle bone in an embedded application and we have problem with the USB-host.
We need 3 ports and thus we use a hub with external power supply (we have tried different brands of usb hub and currently a d-link hub is used PN: EUBH4EB......C1E).
In total the power supply for beagle bone and usb-hub is 5V 3A.
USB hub port device:
1. SanDisk Cruzer Blade 4GB memstick
2 .FT4232
3. ATMEL at32uc3c1512 (while in bootloader, when in application no usb device is active on port)
4. Not connected
The problem we have is that sometimes the kernel reports
ti81xx_interrupt 956: Please issue long reset to make usb functional !!
The only soulution we have so far is to do a soft reboot of the beagle bone. In our application this is not acceptable and we hope you can help us to find a proper solution to this problem.