Subject: Re: [PATCH 0/3] usb: ehci ppc device-tree-aware driver

From: Valentine Barshak <[email-masked]>
Date: Mon, 24 Sep 2007 14:33:19 +0400

Hollis Blanchard wrote:
> On Mon, 17 Sep 2007 16:50:39 +0400, Valentine Barshak wrote:
> 
>> Some PowerPC systems have a built-in EHCI controller.
>> This is a device tree aware version of the EHCI controller driver.
>> Currently it's been tested on the PowerPC 440EPx Sequoia board.
>> Other platforms can be added later.
>> The code is based on the ehci-ppc-soc driver by Stefan Roese <[email-masked]>.
> 
> We're having a strange issue on our Sequoia where the network stops
> functioning when USB is active. Jerone can supply more detail...

OK.
This possibly could be caused by the plb write pipelining errata.
Please, take a look at:
http://ozlabs.org/pipermail/linuxppc-dev/2007-September/042999.html

> 
> Have you seen anything like that?

No, I haven't.

Thanks,
Valentine.