From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?ISO-8859-1?Q?Matthias_Wei=DFer?= <weisserm@arcor.de>
Date: Fri, 03 Dec 2010 17:48:01 +0100
Subject: [U-Boot] arm: Activating dcache breaks 'usb start'
 and	'tftpboot' on jadecpu
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Am 03.12.2010 17:34, schrieb Albert ARIBAUD:
> In addition to making sure that register reads/write are not bitten by 
> caching, note that some controllers have DMA capabilities which require 
> proper cache handling for DMA memory buffers -- typically flushing them 
> from cache before a DMA to the device, and invalidating their cache 
> entries after a DMA from the device.

This is true. DMA and caching can be a lot of fun for a driver developer
:-) But I can guarantee that the network driver doesn't use any DMA
transfer as the hardware doesn't support it.

Thanks
Matthias Wei?er