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Re: What is the current USB support status on DB1550?

To: Kevin Turner <kevin.m.turner@pobox.com>
Subject: Re: What is the current USB support status on DB1550?
From: Pete Popov <ppopov@embeddedalley.com>
Date: Thu, 14 Jul 2005 14:22:50 -0700
Cc: linux-mips <linux-mips@linux-mips.org>
In-reply-to: <1121374174.30104.7.camel@troglodyte.asianpear>
Organization: Embedded Alley Solutions, Inc
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <2db32b7205071408327b005e4e@mail.gmail.com> <1121356192.4797.362.camel@localhost.localdomain> <1121374174.30104.7.camel@troglodyte.asianpear>
Reply-to: ppopov@embeddedalley.com
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On Thu, 2005-07-14 at 13:49 -0700, Kevin Turner wrote:
> On Thu, 2005-07-14 at 08:49 -0700, Pete Popov wrote:
> > Host only. We couldn't make gadget work due to interrupt latency
> > requirements by the HW that couldn't be reliably achieved with Linux.
> > But gadget does work on the Au1200.
> 
> Is the Au1500 in the same boat as the DB1550? 

The Db1550 is the reference board for the Au1550.

>  Do the hardware
> requirements apply to all boards with that SOC, or is it somewhat
> board-dependent?

All boards with the 1100, 1500, or 1550. The Au1200 gadget works, but
the usb controller on the SOC is different. We've made the other CPUs
work before but it was on top of RTLinux, different/proprietary usb
stack, and a lot of debug and tuning.

Pete


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