[U-Boot] [patch] csb337 board support (ARM at91rm9200)

Jean-Christophe PLAGNIOL-VILLARD plagnioj at jcrosoft.com
Tue Jun 30 00:44:10 CEST 2009


On 14:46 Mon 29 Jun     , David Brownell wrote:
> On Monday 29 June 2009, Jean-Christophe PLAGNIOL-VILLARD wrote:
> > > > >   - USB didn't work; the software wouldn't detect usb-storage devices.
> > > > >     So it's not yet enabled.
> > > >
> > > > what is the power on the USB?
> > > 
> > > I don't understand the question.  5V of course.  Not switchable.
> >
> > is the usb provide enough power to supply the usb key
> 
> Well all the devices run on Linux just fine.  Two were
> flash devices, one was an honest-to-gosh 200 MByte disk.
> 
> So it's fairly clear the issue relates to OHCI support
> in u-boot, perhaps specific to the rm9200.  Not hardware.
IIRC it's work on my rm9200ek
> 
>   
> > > > > +#if 0
> > > > please 
> > > > if CONFIG_CMD_USB
> > > > > +/* REVISIT:  USB failed to enumerate devices of any kind ... sw issues */
> > > 
> > > An #if 0 won't work without completely re-whacking things.
> > > 
> > > Right now the commands kick in *MUCH LATER* depending on
> > > whether the driver is available.  And here, the driver
> > > (CONFIG_USB_OHCI_NEW driver) and its support is disabled
> > > since it's not working...
> > so move it
> 
> That's what we call "way too much work".  It involves
> completely restructuring things ... so that instead of
> enabling commands based on driver support (which may
> not be viable) it enables drivers (which may not work)
> based on commands (which should never have been enabled
> unless the relevant driver works).
so remove it until it will work

Best Regards,
J.


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