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Re: Porting Au1x000 USB host controller on u-boot

To: Rodolfo Giometti <giometti@linux.it>
Subject: Re: Porting Au1x000 USB host controller on u-boot
From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Date: Thu, 04 May 2006 21:10:02 +0400
Cc: Linux-MIPS <linux-mips@linux-mips.org>
In-reply-to: <445A347A.5050507@ru.mvista.com>
Organization: MontaVista Software Inc.
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20060504095341.GB19913@gundam.enneenne.com> <445A347A.5050507@ru.mvista.com>
Sender: linux-mips-bounce@linux-mips.org
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Hello,

Sergei Shtylyov wrote:

I'm trying to implement support for USB host into u-boot. I
initialized the USB controller just as linux does, the EDs and the TDs
look like good in memory but the controller seems not well reading
them and on the bus I see random USB messages...

I think that there could be some problem on memory coherency... some
suggestion?

Be sure to set Config0.OD (bit 19), it's proven to fix the USB-related lockups on Au1500 at least. See arch/mips/common/cputable.c

   arch/mips/au1000/common/cputable.c, I mean... :-)

WBR, Sergei


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