From: khc@pm.waw.pl (Krzysztof Halasa)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: remove ixp2000 platform
Date: Sun, 11 Mar 2012 13:31:36 +0100 [thread overview]
Message-ID: <m3aa3nqpxz.fsf@intrepid.localdomain> (raw)
In-Reply-To: <4F574C64.7010905@snapgear.com> (Greg Ungerer's message of "Wed, 7 Mar 2012 21:54:12 +1000")
Greg Ungerer <gerg@snapgear.com> writes:
> The built in ethernet interfaces on the ixp4xx family are not PCI
> based. So they at least do not suffer from the BE/LE conversions
> at the eth driver.
The problematic one is IXP42x rev. A0. It has no support for hw mixed
mode (LE core + lane swapping where needed). Unfortunately this early
chip is quite popular. "Software" mixed mode means byte swapping in the
network drivers and IIRC the crypto accelerator becomes unusable (at
least without workarounds).
Later revisions (42x rev. B0 and up, and all other IXP4[356]) can work
in the most efficient hw mixed mode. Support is not upstream but it's
basically ready. I think it may be incompatible with XIP.
--
Krzysztof Halasa
next prev parent reply other threads:[~2012-03-11 12:31 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1330450426-14639-1-git-send-email-robherring2@gmail.com>
2012-02-28 19:45 ` [PATCH] ARM: remove ixp2000 platform Arnd Bergmann
2012-03-06 1:41 ` Nicolas Pitre
2012-03-06 2:44 ` Rob Herring
2012-03-06 9:16 ` Russell King - ARM Linux
2012-03-06 14:11 ` Arnd Bergmann
2012-03-06 16:51 ` Nicolas Pitre
2012-03-06 17:10 ` Arnd Bergmann
2012-03-06 17:38 ` Richard Cochran
2012-03-07 8:40 ` Linus Walleij
2012-03-07 9:14 ` Russell King - ARM Linux
2012-03-07 11:54 ` Greg Ungerer
2012-03-11 12:31 ` Krzysztof Halasa [this message]
2012-03-11 23:48 ` Greg Ungerer
2012-03-13 21:15 ` Krzysztof Halasa
2012-03-07 17:09 ` Imre Kaloz
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