From: robherring2@gmail.com (Rob Herring)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/6] arm: kconfig: don't select TWD with local timer for Armada 370/XP
Date: Tue, 22 Jan 2013 14:46:49 -0600 [thread overview]
Message-ID: <50FEFAB9.4030503@gmail.com> (raw)
In-Reply-To: <201301212044.41865.arnd@arndb.de>
On 01/21/2013 02:44 PM, Arnd Bergmann wrote:
>> On multiplatform kernels where at least one arch has TWD support, it
>> will be included, and where not, it will not.
>>
>> It doesn't seem logical for a feature descriptor (HAVE_ARM_TWD) to
>> rely on greater knowledge of what platforms may or may not support it.
>> If we had to include every platform in that list it would be unwieldy.
>
> I would expect that all future platforms have ARM_TWD, so the list
> of the platforms that don't is not going to grow much, but the list
> of platforms that do will keep growing.
No, I expect all future platforms will have architected timers. TWD is
pretty much A9 and A5 only I believe. Same with SCU. I've probably
missed some in my list.
Rob
WARNING: multiple messages have this Message-ID (diff)
From: Rob Herring <robherring2@gmail.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Matt Sealey <matt@genesi-usa.com>,
Lior Amsalem <alior@marvell.com>, Andrew Lunn <andrew@lunn.ch>,
Ike Pan <ike.pan@canonical.com>,
John Stultz <johnstul@us.ibm.com>,
David Marlin <dmarlin@redhat.com>,
Yehuda Yitschak <yehuday@marvell.com>,
Jani Monoses <jani.monoses@canonical.com>,
Russell King <linux@arm.linux.org.uk>,
Tawfik Bayouk <tawfik@marvell.com>,
Dan Frazier <dann.frazier@canonical.com>,
Eran Ben-Avi <benavi@marvell.com>,
Leif Lindholm <leif.lindholm@arm.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
Jason Cooper <jason@lakedaemon.net>,
Nadav Haklai <nadavh@marvell.com>, Jon Masters <jcm@redhat.com>,
"devicetree-discuss@lists.ozlabs.org"
<devicetree-discuss@lists.ozlabs.org>,
Rob Herring <rob.herring@calxeda.com>,
Thomas Gleixner <tglx@linutronix.de>,
Linux ARM Kernel ML <linux-arm-kernel@lists.infradead.org>,
Chris Van Hoof <vanhoof@ca>
Subject: Re: [PATCH 3/6] arm: kconfig: don't select TWD with local timer for Armada 370/XP
Date: Tue, 22 Jan 2013 14:46:49 -0600 [thread overview]
Message-ID: <50FEFAB9.4030503@gmail.com> (raw)
In-Reply-To: <201301212044.41865.arnd@arndb.de>
On 01/21/2013 02:44 PM, Arnd Bergmann wrote:
>> On multiplatform kernels where at least one arch has TWD support, it
>> will be included, and where not, it will not.
>>
>> It doesn't seem logical for a feature descriptor (HAVE_ARM_TWD) to
>> rely on greater knowledge of what platforms may or may not support it.
>> If we had to include every platform in that list it would be unwieldy.
>
> I would expect that all future platforms have ARM_TWD, so the list
> of the platforms that don't is not going to grow much, but the list
> of platforms that do will keep growing.
No, I expect all future platforms will have architected timers. TWD is
pretty much A9 and A5 only I believe. Same with SCU. I've probably
missed some in my list.
Rob
WARNING: multiple messages have this Message-ID (diff)
From: Rob Herring <robherring2@gmail.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Matt Sealey <matt@genesi-usa.com>,
Lior Amsalem <alior@marvell.com>, Andrew Lunn <andrew@lunn.ch>,
Ike Pan <ike.pan@canonical.com>,
John Stultz <johnstul@us.ibm.com>,
David Marlin <dmarlin@redhat.com>,
Yehuda Yitschak <yehuday@marvell.com>,
Jani Monoses <jani.monoses@canonical.com>,
Russell King <linux@arm.linux.org.uk>,
Tawfik Bayouk <tawfik@marvell.com>,
Dan Frazier <dann.frazier@canonical.com>,
Eran Ben-Avi <benavi@marvell.com>,
Leif Lindholm <leif.lindholm@arm.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
Jason Cooper <jason@lakedaemon.net>,
Nadav Haklai <nadavh@marvell.com>, Jon Masters <jcm@redhat.com>,
"devicetree-discuss@lists.ozlabs.org"
<devicetree-discuss@lists.ozlabs.org>,
Rob Herring <rob.herring@calxeda.com>,
Thomas Gleixner <tglx@linutronix.de>,
Linux ARM Kernel ML <linux-arm-kernel@lists.infradead.org>,
Chris Van Hoof <vanhoof@canonical.com>,
LKML <linux-kernel@vger.kernel.org>,
Maen Suleiman <maen@marvell.com>,
Shadi Ammouri <shadi@marvell.com>
Subject: Re: [PATCH 3/6] arm: kconfig: don't select TWD with local timer for Armada 370/XP
Date: Tue, 22 Jan 2013 14:46:49 -0600 [thread overview]
Message-ID: <50FEFAB9.4030503@gmail.com> (raw)
In-Reply-To: <201301212044.41865.arnd@arndb.de>
On 01/21/2013 02:44 PM, Arnd Bergmann wrote:
>> On multiplatform kernels where at least one arch has TWD support, it
>> will be included, and where not, it will not.
>>
>> It doesn't seem logical for a feature descriptor (HAVE_ARM_TWD) to
>> rely on greater knowledge of what platforms may or may not support it.
>> If we had to include every platform in that list it would be unwieldy.
>
> I would expect that all future platforms have ARM_TWD, so the list
> of the platforms that don't is not going to grow much, but the list
> of platforms that do will keep growing.
No, I expect all future platforms will have architected timers. TWD is
pretty much A9 and A5 only I believe. Same with SCU. I've probably
missed some in my list.
Rob
next prev parent reply other threads:[~2013-01-22 20:46 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-21 17:53 [PATCH 0/6] arm: mvebu: add support for local timer for Armada 370/XP Gregory CLEMENT
2013-01-21 17:53 ` Gregory CLEMENT
2013-01-21 17:53 ` [PATCH 1/6] arm: mvebu: Add support for local interrupt Gregory CLEMENT
2013-01-21 17:53 ` Gregory CLEMENT
2013-01-21 17:53 ` Gregory CLEMENT
2013-01-21 18:17 ` Thomas Petazzoni
2013-01-21 18:17 ` Thomas Petazzoni
2013-01-21 22:07 ` Gregory CLEMENT
2013-01-21 22:07 ` Gregory CLEMENT
2013-01-21 23:26 ` Ezequiel Garcia
2013-01-21 23:26 ` Ezequiel Garcia
2013-01-22 9:09 ` Gregory CLEMENT
2013-01-22 9:09 ` Gregory CLEMENT
2013-01-22 16:55 ` Thomas Petazzoni
2013-01-22 16:55 ` Thomas Petazzoni
2013-01-21 17:53 ` [PATCH 2/6] clocksource: time-armada-370-xp: add local timer support Gregory CLEMENT
2013-01-21 17:53 ` Gregory CLEMENT
2013-01-21 17:53 ` Gregory CLEMENT
2013-01-21 17:59 ` Russell King - ARM Linux
2013-01-21 17:59 ` Russell King - ARM Linux
2013-01-21 18:04 ` Gregory CLEMENT
2013-01-21 18:04 ` Gregory CLEMENT
2013-01-23 13:11 ` Gregory CLEMENT
2013-01-23 13:11 ` Gregory CLEMENT
2013-01-21 17:53 ` [PATCH 3/6] arm: kconfig: don't select TWD with local timer for Armada 370/XP Gregory CLEMENT
2013-01-21 17:53 ` Gregory CLEMENT
2013-01-21 18:31 ` Arnd Bergmann
2013-01-21 18:31 ` Arnd Bergmann
2013-01-21 19:29 ` Matt Sealey
2013-01-21 19:29 ` Matt Sealey
2013-01-21 20:44 ` Arnd Bergmann
2013-01-21 20:44 ` Arnd Bergmann
2013-01-22 17:12 ` Russell King - ARM Linux
2013-01-22 17:12 ` Russell King - ARM Linux
2013-01-22 20:46 ` Rob Herring [this message]
2013-01-22 20:46 ` Rob Herring
2013-01-22 20:46 ` Rob Herring
2013-01-22 21:19 ` Arnd Bergmann
2013-01-22 21:19 ` Arnd Bergmann
2013-01-22 21:19 ` Arnd Bergmann
2013-01-21 22:37 ` Gregory CLEMENT
2013-01-21 22:37 ` Gregory CLEMENT
2013-01-22 15:57 ` Arnd Bergmann
2013-01-22 15:57 ` Arnd Bergmann
2013-01-22 16:34 ` Gregory CLEMENT
2013-01-22 16:34 ` Gregory CLEMENT
2013-01-22 17:42 ` [PATCH] arm: kconfig: always select TWD with local timer for multiplatform Gregory CLEMENT
2013-01-22 17:18 ` [PATCH 3/6] arm: kconfig: don't select TWD with local timer for Armada 370/XP Russell King - ARM Linux
2013-01-22 17:18 ` Russell King - ARM Linux
2013-01-22 17:42 ` Arnd Bergmann
2013-01-22 17:42 ` Arnd Bergmann
2013-01-21 17:54 ` [PATCH 4/6] arm: mvebu: update defconfig with local timer support Gregory CLEMENT
2013-01-21 17:54 ` Gregory CLEMENT
2013-01-21 17:54 ` Gregory CLEMENT
2013-01-21 17:54 ` [PATCH 5/6] arm: mvebu: update DT to support local timers Gregory CLEMENT
2013-01-21 17:54 ` Gregory CLEMENT
2013-01-21 17:54 ` [PATCH 6/6] clocksource: update and move armada-370-xp-timer documentation to timer directory Gregory CLEMENT
2013-01-21 17:54 ` Gregory CLEMENT
2013-01-21 18:22 ` Arnd Bergmann
2013-01-21 18:22 ` Arnd Bergmann
2013-01-21 22:05 ` Gregory CLEMENT
2013-01-21 22:05 ` Gregory CLEMENT
2013-01-21 22:26 ` Arnd Bergmann
2013-01-21 22:26 ` Arnd Bergmann
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