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From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: remove ARM710 specific assembler code
Date: Tue, 20 May 2014 22:09:48 +0200	[thread overview]
Message-ID: <4437236.32BrGIk46D@wuerfel> (raw)
In-Reply-To: <20140520160512.GE27830@atomide.com>

On Tuesday 20 May 2014 09:05:13 Tony Lindgren wrote:
> * Arnd Bergmann <arnd@arndb.de> [140519 04:27]:
> > On Saturday 17 May 2014 10:56:02 Catalin Marinas wrote:
> > 
> > For the case of ARM710T, I think the last remaining user that can be
> > configured is mach-integrator, but I don't know if anybody even has that
> > CPU tile, or wants to keep using it. If Russell and Linus as the only
> > people that have cared about Integrator in the past years want to
> > cut down the number of supported CPUs, that would be a different matter:
> > quite a number of CPUs are not supported in any other platform.
> > Note that the integrator target in qemu does not support any ARM7, only
> > StrongARM, ARM9 or later. I also double-checked about mach-clps711x,
> > but I'm pretty sure those SoCs are all either ARM710a (no longer supported)
> > or ARM720T (quite active).
> 
> Hmm I don't think mach-integrator is using ARM710T?

I don't know, we don't have a separate Kconfig option, so ARM710T and ARM720T
use the same CONFIG_CPU_ARM720T symbol that can be enabled for integrator.
Without any further information, I assumed that both might potentially be used.

> The ARM710T was done by NEC and was used by the Psion MX hardware.
> It's very close to ARM720T as far as I remember so might as well keep
> the CPU support for it as that's just a few lines of code in the
> mainline kernel.
> 
> I don't think we have any mach directories using ARM710T, but I
> would not be surprised if somebody comes along with device tree
> based booting patches for Psion MX at some point.

Of course, if someone does this, the CPU support would be the least
of their work ;-)

Just out of curiosity: was that NEC 710T a SoC that replaced the
CL/PS7110, or a standalone CPU that Psion combined with a custom
ASIC?

	Arnd

WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Tony Lindgren <tony@atomide.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Paul Bolle <pebolle@tiscali.nl>,
	Russell King - ARM Linux <linux@arm.linux.org.uk>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] ARM: remove ARM710 specific assembler code
Date: Tue, 20 May 2014 22:09:48 +0200	[thread overview]
Message-ID: <4437236.32BrGIk46D@wuerfel> (raw)
In-Reply-To: <20140520160512.GE27830@atomide.com>

On Tuesday 20 May 2014 09:05:13 Tony Lindgren wrote:
> * Arnd Bergmann <arnd@arndb.de> [140519 04:27]:
> > On Saturday 17 May 2014 10:56:02 Catalin Marinas wrote:
> > 
> > For the case of ARM710T, I think the last remaining user that can be
> > configured is mach-integrator, but I don't know if anybody even has that
> > CPU tile, or wants to keep using it. If Russell and Linus as the only
> > people that have cared about Integrator in the past years want to
> > cut down the number of supported CPUs, that would be a different matter:
> > quite a number of CPUs are not supported in any other platform.
> > Note that the integrator target in qemu does not support any ARM7, only
> > StrongARM, ARM9 or later. I also double-checked about mach-clps711x,
> > but I'm pretty sure those SoCs are all either ARM710a (no longer supported)
> > or ARM720T (quite active).
> 
> Hmm I don't think mach-integrator is using ARM710T?

I don't know, we don't have a separate Kconfig option, so ARM710T and ARM720T
use the same CONFIG_CPU_ARM720T symbol that can be enabled for integrator.
Without any further information, I assumed that both might potentially be used.

> The ARM710T was done by NEC and was used by the Psion MX hardware.
> It's very close to ARM720T as far as I remember so might as well keep
> the CPU support for it as that's just a few lines of code in the
> mainline kernel.
> 
> I don't think we have any mach directories using ARM710T, but I
> would not be surprised if somebody comes along with device tree
> based booting patches for Psion MX at some point.

Of course, if someone does this, the CPU support would be the least
of their work ;-)

Just out of curiosity: was that NEC 710T a SoC that replaced the
CL/PS7110, or a standalone CPU that Psion combined with a custom
ASIC?

	Arnd

  reply	other threads:[~2014-05-20 20:09 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-28 21:46 [PATCH] ARM: remove last use of CONFIG_CPU_ARM710 Paul Bolle
2013-03-28 21:46 ` Paul Bolle
2014-05-14  8:24 ` [PATCH] [RESEND] " Paul Bolle
2014-05-14  8:24   ` Paul Bolle
2014-05-14  8:48   ` Alexander Shiyan
2014-05-14  8:48     ` Alexander Shiyan
2014-05-14  9:07     ` Paul Bolle
2014-05-14  9:07       ` Paul Bolle
2014-05-14  9:17   ` Arnd Bergmann
2014-05-14  9:17     ` Arnd Bergmann
2014-05-14  9:25     ` Paul Bolle
2014-05-14  9:25       ` Paul Bolle
2014-05-14  9:28       ` Arnd Bergmann
2014-05-14  9:28         ` Arnd Bergmann
2014-05-16  9:29         ` [PATCH] ARM: remove ARM710 specific assembler code Paul Bolle
2014-05-16  9:29           ` Paul Bolle
2014-05-16 12:55           ` Russell King - ARM Linux
2014-05-16 12:55             ` Russell King - ARM Linux
2014-05-16 14:50             ` Paul Bolle
2014-05-16 14:50               ` Paul Bolle
2014-05-17  9:23             ` Catalin Marinas
2014-05-17  9:23               ` Catalin Marinas
2014-05-17  9:46               ` Russell King - ARM Linux
2014-05-17  9:46                 ` Russell King - ARM Linux
2014-05-17  9:56                 ` Catalin Marinas
2014-05-17  9:56                   ` Catalin Marinas
2014-05-17 10:26                   ` Russell King - ARM Linux
2014-05-17 10:26                     ` Russell King - ARM Linux
2014-05-19 10:18                     ` Catalin Marinas
2014-05-19 10:18                       ` Catalin Marinas
2014-05-19 11:26                   ` Arnd Bergmann
2014-05-19 11:26                     ` Arnd Bergmann
2014-05-20 16:05                     ` Tony Lindgren
2014-05-20 16:05                       ` Tony Lindgren
2014-05-20 20:09                       ` Arnd Bergmann [this message]
2014-05-20 20:09                         ` Arnd Bergmann
2014-05-22 18:40                         ` Tony Lindgren
2014-05-22 18:40                           ` Tony Lindgren
2014-05-22 18:42                           ` Tony Lindgren
2014-05-22 18:42                             ` Tony Lindgren
2014-05-20 15:48               ` One Thousand Gnomes
2014-05-20 15:48                 ` One Thousand Gnomes
2014-05-20 16:14                 ` Catalin Marinas
2014-05-20 16:14                   ` Catalin Marinas
2014-05-23  9:07         ` [PATCH] [RESEND] ARM: remove last use of CONFIG_CPU_ARM710 Paul Bolle
2014-05-23  9:07           ` Paul Bolle
2014-05-23  9:22           ` Arnd Bergmann
2014-05-23  9:22             ` Arnd Bergmann

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