From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 08/13] mfd: Versatile Express system registers driver
Date: Wed, 19 Sep 2012 11:17:45 +0000 [thread overview]
Message-ID: <201209191117.45316.arnd@arndb.de> (raw)
In-Reply-To: <1348052009.11116.55.camel@hornet>
On Wednesday 19 September 2012, Pawel Moll wrote:
> On Tue, 2012-09-18 at 16:24 +0100, Arnd Bergmann wrote:
> > On Tuesday 18 September 2012, Pawel Moll wrote:
>
> Yes, but I2C devices are created by of_i2c_register_devices() which
> knows how to interpret the reg property. And here, as these are normal
> platform devices now (as you suggested), the of_platform_bus_create()
> will treat it as a normal address, translate it via ranges and create
> IORESOURCE_MEM out of it... And that's what I wanted to avoid. Maybe
> unnecessarily?
You are right, this is a bit nasty, it should not attempt to do this.
Basically the reg parsing logic has a hack to work around apply PowerMac
firmware that misses some "ranges" properties.
I think we should change the DT parsing code to not create those
resources if there is a bus that can't be translated.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>
Cc: device-tree
<devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org>,
"arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org"
<arm-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>
Subject: Re: [PATCH v2 08/13] mfd: Versatile Express system registers driver
Date: Wed, 19 Sep 2012 11:17:45 +0000 [thread overview]
Message-ID: <201209191117.45316.arnd@arndb.de> (raw)
In-Reply-To: <1348052009.11116.55.camel@hornet>
On Wednesday 19 September 2012, Pawel Moll wrote:
> On Tue, 2012-09-18 at 16:24 +0100, Arnd Bergmann wrote:
> > On Tuesday 18 September 2012, Pawel Moll wrote:
>
> Yes, but I2C devices are created by of_i2c_register_devices() which
> knows how to interpret the reg property. And here, as these are normal
> platform devices now (as you suggested), the of_platform_bus_create()
> will treat it as a normal address, translate it via ranges and create
> IORESOURCE_MEM out of it... And that's what I wanted to avoid. Maybe
> unnecessarily?
You are right, this is a bit nasty, it should not attempt to do this.
Basically the reg parsing logic has a hack to work around apply PowerMac
firmware that misses some "ranges" properties.
I think we should change the DT parsing code to not create those
resources if there is a bus that can't be translated.
Arnd
next prev parent reply other threads:[~2012-09-19 11:17 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-18 14:17 [PATCH v2 00/13] Versatile Express infrastructure Pawel Moll
2012-09-18 14:17 ` [PATCH v2 01/13] input: ambakmi: (Un)prepare clocks when (dis)enabling Pawel Moll
2012-09-18 14:17 ` Pawel Moll
2012-09-18 14:17 ` [PATCH v2 02/13] video: Versatile Express display output driver Pawel Moll
2012-09-18 14:17 ` Pawel Moll
2012-09-18 14:17 ` [lm-sensors] [PATCH v2 03/13] hwmon: Versatile Express hwmon driver Pawel Moll
2012-09-18 14:17 ` Pawel Moll
2012-09-18 15:24 ` [lm-sensors] " Guenter Roeck
2012-09-18 15:24 ` Guenter Roeck
2012-09-18 15:45 ` [lm-sensors] " Jean Delvare
2012-09-18 15:45 ` Jean Delvare
2012-09-18 20:59 ` [lm-sensors] " Guenter Roeck
2012-09-18 20:59 ` Guenter Roeck
2012-09-19 17:04 ` [lm-sensors] " Pawel Moll
2012-09-19 17:04 ` Pawel Moll
2012-09-20 2:03 ` [lm-sensors] " Guenter Roeck
2012-09-20 2:03 ` Guenter Roeck
2012-09-18 14:17 ` [PATCH v2 04/13] regulators: Versatile Express regulator driver Pawel Moll
2012-09-18 15:02 ` Mark Brown
2012-09-18 15:44 ` Pawel Moll
2012-09-18 16:09 ` Mark Brown
2012-09-18 17:03 ` Pawel Moll
2012-09-19 2:21 ` Mark Brown
2012-09-19 16:58 ` Pawel Moll
2012-09-20 13:01 ` Mark Brown
2012-09-20 17:34 ` Pawel Moll
2012-09-20 18:15 ` Mark Brown
2012-09-18 14:17 ` [PATCH v2 05/13] clk: Versatile Express clock generators ("osc") driver Pawel Moll
2012-10-29 17:44 ` Mike Turquette
2012-09-18 14:17 ` [PATCH v2 06/13] clk: Common clocks implementation for Versatile Express Pawel Moll
2012-09-18 14:17 ` [PATCH v2 07/13] misc: Versatile Express config infrastructure Pawel Moll
2012-09-19 13:08 ` Arnd Bergmann
2012-09-20 12:06 ` Pawel Moll
2012-09-20 12:36 ` Arnd Bergmann
2012-09-20 12:37 ` Pawel Moll
2012-09-18 14:17 ` [PATCH v2 08/13] mfd: Versatile Express system registers driver Pawel Moll
2012-09-18 15:24 ` Arnd Bergmann
2012-09-19 10:53 ` Pawel Moll
2012-09-19 11:17 ` Arnd Bergmann [this message]
2012-09-19 11:17 ` Arnd Bergmann
2012-09-19 11:45 ` Pawel Moll
2012-09-19 11:45 ` Pawel Moll
2012-09-18 14:17 ` [PATCH v2 09/13] ARM: vexpress: Reset driver Pawel Moll
2012-09-18 14:17 ` [PATCH v2 10/13] ARM: vexpress: Add config bus components and clocks to DTs Pawel Moll
2012-09-18 14:17 ` [PATCH v2 11/13] ARM: vexpress: Start using new Versatile Express infrastructure Pawel Moll
2012-09-18 14:17 ` [PATCH v2 12/13] ARM: vexpress: Remove motherboard dependencies in the DTS files Pawel Moll
2012-09-18 14:17 ` [PATCH v2 13/13] ARM: vexpress: Make the DEBUG_LL UART detection more specific Pawel Moll
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