[U-Boot] arm: Activating dcache breaks 'usb start' and 'tftpboot' on jadecpu

[Wolfgang Denk]

Dear =?ISO-8859-15?Q?Matthias_Wei=DFer?=,

In message <4CF8FE3E.9010105 at arcor.de> you wrote:
> 
> I just activated the dcache on our jadecpu board but it seems to me that 
> this breaks some commands.

I am not surprised.

> Has anyone an explanation for this behavior? Is anyone out there having 
> dcache running on an ARM926 and working usb/tftpboot?

Many drivers have not been written to work with enabled caches.

As far as USB is concerned, you might be lucky that your system usies
a EHCI controller, so setting CONFIG_EHCI_DCACHE should help.

As for the network driver, you will probably have to figure out
yourself how to fix that.

Patches welcome.

Best regards,

Wolfgang Denk

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