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Subject: Re: USB hangs on AU1100
From:	Pete Popov <ppopov@embeddedalley.com>
Reply-To: ppopov@embeddedalley.com
To:	Rodolfo Giometti <giometti@linux.it>
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Organization: Embedded Alley Solutions, Inc
Date:	Thu, 05 May 2005 09:42:41 -0700
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On Thu, 2005-05-05 at 17:54 +0200, Rodolfo Giometti wrote:
> Hello,
> 
> I'm just using USB host support on a AU1100 developing board (DB1100
> configuration) and i notice that CPU locks in function
> au1xxx_start_hc():
> 
>         /* wait for reset complete (read register twice; see au1500 errata) */
>         while (au_readl(USB_HOST_CONFIG),
>                 !(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD))
>                 udelay(1000);
> 
> while waiting for USB controller to reset. I checked it out and I
> discovered that register USB_HOST_CONFIG is fixed at value 0xe! So the
> controller never reset...
> 
> Linux is 2.6.12-rc3 from CVS.
> 
> Someone knows whats wrong?

It sounds like this is a custom Au1100 based board? What boot code are
you running?  I'm guessing the SOC isn't setup correctly or you have a
HW problem.

Pete