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Message-ID: <1388373200.4373.25.camel@pasglop>
Date: Mon, 30 Dec 2013 14:13:20 +1100
From: Benjamin Herrenschmidt <benh@...nel.crashing.org>
To: Nikita Yushchenko <nyushchenko@....rtsoft.ru>
Cc: Rob Herring <robherring2@...il.com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
Arnd Bergmann <arnd@...db.de>,
Dmitry Krivoschekov <dkrivoschokov@....rtsoft.ru>,
Alexey Lugovskoy <lugovskoy@....rtsoft.ru>,
Thierry Reding <thierry.reding@...onic-design.de>,
linux-kernel@...r.kernel.org,
Grant Likely <grant.likely@...aro.org>,
linuxppc-dev@...ts.ozlabs.org
Subject: Re: commit e38c0a1f breaks powerpc boards with uli1575 chip
On Thu, 2013-12-19 at 08:42 +0400, Nikita Yushchenko wrote:
> No, this does not help.
>
> I've dumped the actual content of 'range' and 'addr' at the failure
> point
> (i.e. ar point that returns error with e38c0a1f but passes without
> e38c0a1f ):
>
> OF: default map, cp=0, s=10000, da=70
> range: 01 00 00 00 00 00 00 00 00 00 00 00
> addr: 00 00 00 00 00 00 00 00 00 00 00 70
Something that has a #address-cells larger than 2, or more generally,
an address field that contains more than a single number, must have
a specific translation backend, like we have for PCI.
This is a bit annoying but originates from the original OFW stuff on
which this stuff is based where the bus node would provide the methods
for translation.
Cheers,
Ben.
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