[U-Boot] [U-Boot-Users] Multiple USB controller support under Uboot

Matthias Fuchs matthias.fuchs at esd-electronics.com
Tue Aug 26 18:07:08 CEST 2008


Hi Mike,

U-Boot currently only supports one USB host controller at a time. So it's
wrong to say that U-Boot finds only one, but correct is, that U-Boot only
uses one.
Commands to switch between different controllers or multi controller support
is missing. 

You could add this feature ;-)

Matthias

On Monday 25 August 2008 20:55, mike zheng wrote:
> Hello,
> 
> I am using ISP156x USB PCI controller with Uboot.  Right now, the code
> can find only 1 root hub when I use "usb inf" or "usb tree" command to
> check the USB tree. If I list the PCI device, it shows there are 2
> OHCI and 1 EHCI host controller. Anyone knows why I have only one root
> hub? What shall the USB tree looks like for ISP156x USB PCI host
> controller?
> Thanks,
> 
> Mike


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