From: khalasa@piap.pl (Krzysztof Hałasa)
To: Arnd Bergmann <arnd@arndb.de>
Cc: Jason Cooper <jason@lakedaemon.net>,
Marc Zyngier <marc.zyngier@arm.com>,
Linus Walleij <linus.walleij@linaro.org>,
Olof Johansson <olof@lixom.net>,
Thomas Gleixner <tglx@linutronix.de>,
Imre Kaloz <kaloz@openwrt.org>,
Tim Harvey <tharvey@gateworks.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 04/17 v1] irqchip: Add driver for IXP4xx
Date: Mon, 18 Feb 2019 13:03:25 +0100 [thread overview]
Message-ID: <m3bm39uwvm.fsf@t19.piap.pl> (raw)
In-Reply-To: <CAK8P3a1Y2kLeDYKGMGpuLk8rxUxFwuPvjMRoLj-c2a8Bnwi56w@mail.gmail.com> (Arnd Bergmann's message of "Mon, 18 Feb 2019 10:40:47 +0100")
Arnd Bergmann <arnd@arndb.de> writes:
> I found a document that explains some of the more obscure details
> of this chip (among a lot of the general concepts), in particular how
> you can configure memory regions as either BE, LE-data-coherent or
> LE-address-coherent, and the byte swap on PCI depending on that:
There is also a problem with certain devices (certain old US Robotics
access servers?) using IXP425 rev. A0. Those first chips don't have the
LE data coherent mode.
We (= the official Linux kernel) don't use LE data coherent mode at all,
though I have had a patch (not very clean) which could do that.
--
Krzysztof Halasa
Industrial Research Institute for Automation and Measurements PIAP
Al. Jerozolimskie 202, 02-486 Warsaw, Poland
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next prev parent reply other threads:[~2019-02-18 12:03 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-03 21:41 [PATCH 00/17 v1] ARM: ixp4xx: Modernize and DT support Linus Walleij
2019-02-03 21:41 ` [PATCH 01/17 v1] ARM: ixp4xx: Convert to MULTI_IRQ_HANDLER Linus Walleij
2019-02-03 21:41 ` [PATCH 02/17 v1] ARM: ixp4xx: Pass IRQ resource to beeper Linus Walleij
2019-02-03 21:41 ` [PATCH 03/17 v1] ARM: ixp4xx: Convert to SPARSE_IRQ Linus Walleij
2019-02-03 21:41 ` [PATCH 04/17 v1] irqchip: Add driver for IXP4xx Linus Walleij
2019-02-11 15:30 ` Marc Zyngier
2019-02-11 20:58 ` Linus Walleij
2019-02-11 22:11 ` Marc Zyngier
2019-02-18 7:06 ` Krzysztof Hałasa
2019-02-18 7:16 ` Linus Walleij
2019-02-18 7:35 ` Krzysztof Hałasa
2019-02-18 9:40 ` Arnd Bergmann
2019-02-18 12:03 ` Krzysztof Hałasa [this message]
2019-02-18 12:44 ` Arnd Bergmann
2019-02-19 6:51 ` Krzysztof Hałasa
2019-02-19 9:46 ` Arnd Bergmann
2019-02-20 7:35 ` Krzysztof Hałasa
2019-02-18 9:18 ` Arnd Bergmann
2019-02-03 21:41 ` [PATCH 05/17 v1] gpio: ixp4xx: Add driver for the IXP4xx GPIO Linus Walleij
2019-02-06 16:03 ` Bartosz Golaszewski
2019-02-21 8:50 ` Linus Walleij
2019-02-03 21:41 ` [PATCH 06/17 v1] ARM: ixp4xx: Switch to use new IRQ+GPIO drivers Linus Walleij
2019-02-03 21:41 ` [PATCH 07/17 v1] clocksource/drivers/ixp4xx: Add driver Linus Walleij
2019-02-03 21:41 ` [PATCH 08/17 v1] ARM: ixp4xx: Switch to use new timer driver Linus Walleij
2019-02-03 21:41 ` [PATCH 09/17 v1] irqchip: ixp4xx: Add DT bindings Linus Walleij
2019-02-03 21:41 ` Linus Walleij
2019-02-18 21:25 ` Rob Herring
2019-02-18 21:25 ` Rob Herring
2019-02-03 21:41 ` [PATCH 10/17 v1] irqchip: ixp4xx: Add OF initialization support Linus Walleij
2019-02-03 21:41 ` [PATCH 11/17 v1] clocksource/drivers/ixp4xx: Add DT bindings Linus Walleij
2019-02-03 21:41 ` Linus Walleij
2019-02-18 21:26 ` Rob Herring
2019-02-18 21:26 ` Rob Herring
2019-02-18 22:10 ` Daniel Lezcano
2019-02-03 21:42 ` [PATCH 12/17 v1] clocksource/drivers/ixp4xx: Add OF initialization support Linus Walleij
2019-02-11 11:26 ` Daniel Lezcano
2019-02-03 21:42 ` [PATCH 13/17 v1] gpio: ixp4xx: Add DT bindings Linus Walleij
2019-02-03 21:42 ` Linus Walleij
2019-02-06 16:05 ` Bartosz Golaszewski
2019-02-18 21:27 ` Rob Herring
2019-02-18 21:27 ` Rob Herring
2019-02-03 21:42 ` [PATCH 14/17 v1] gpio: ixp4xx: Add OF probing support Linus Walleij
2019-02-06 16:13 ` Bartosz Golaszewski
2019-02-21 8:55 ` Linus Walleij
2019-02-03 21:42 ` [PATCH 15/17 v1] ARM: ixp4xx: Add DT bindings Linus Walleij
2019-02-03 21:42 ` Linus Walleij
2019-02-04 15:16 ` Rob Herring
2019-02-04 15:16 ` Rob Herring
2019-02-08 19:37 ` Linus Walleij
2019-02-08 19:37 ` Linus Walleij
2019-02-03 21:42 ` [PATCH 16/17 v1] ARM: ixp4xx: Add device tree boot support Linus Walleij
2019-02-03 21:42 ` [PATCH 17/17 v1] RFC: ARM: dts: Add some initial IXP4xx device trees Linus Walleij
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