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Re: Porting Au1x000 USB host controller on u-boot

To: Rodolfo Giometti <>
Subject: Re: Porting Au1x000 USB host controller on u-boot
From: Sergei Shtylyov <>
Date: Thu, 04 May 2006 21:10:02 +0400
Cc: Linux-MIPS <>
In-reply-to: <>
Organization: MontaVista Software Inc.
Original-recipient: rfc822;
References: <> <>
User-agent: Mozilla/5.0 (X11; U; Linux i686; rv:1.7.2) Gecko/20040803

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

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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