Re: [Gumstix-users] USB Host and HUB

[Jonathan B. <jbr...@ea...>]

On Tue, 2005-03-29 at 13:23 -0500, Greg Taylor wrote:
> Greetings,
> 
>  We are trying to figure out the best way to get a USB Hub connected to our 
> Gumstix in order to allow access to a USB Key drive for file storage, as well 
> as connecting to some additional peripherals that we use out in the field. 
> 
>  We have bought a Ratoc Systems CFU1 USB Host CF Card and the CF module for 
> the Gumstix. Along with this, we have a GE USB Hub (HO97958) and a SanDisk 
> cruzer mini 512 MB flash drive. 
> 
>  I have tried connecting the key drive right into the USB Host but nothing 
> pops up on the dmesg output. Are there any particular modules that I need to 
> load to get the HUB and/or key drive working? 

Automatic module loading is performed by the hotplug system, which isn't
in the buildroot, so you will have to load the usb_storage and the host
controller modules manually.  The host controller driver will be one of
uhci_hcd, ohci_hcd, or ehci_hcd.

You should still see something in dmesg along these lines when you have
the host controller driver loaded:
usb 1-2: new full speed USB device using uhci_hcd and address 3

which simply acknowledge that a new device has been noticed by the usb
host driver.  Association of the new device with the usb_storage driver
will be logged more or less like this (this sequence with on-demand
loading of the storage driver):

SCSI subsystem initialized
Initializing USB Mass Storage driver...
scsi0 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 3
usb-storage: waiting for device to settle before scanning
usbcore: registered new driver usb-storage
USB Mass Storage support registered.

HTH,
-Jonathan