From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 17/26] ARM: pxa: pxa95x is incompatible with earlier pxa
Date: Sun, 09 Oct 2011 13:35:31 +0200 [thread overview]
Message-ID: <5678343.s7jMIvu0rV@wuerfel> (raw)
In-Reply-To: <CAN1soZyDu43EN3W5YBttdzx7qx=MLKAR1OsJC3hUdqWWxhQaew@mail.gmail.com>
On Sunday 09 October 2011 14:21:35 Haojian Zhuang wrote:
> > If we move it to arch/arm/Kconfig, I would prefer making it a global option,
> > not a pxa specific one. If we introduce a top-level CONFIG_CPU_V6PLUS
> > option, we can make a number of decisions inside of Kconfig depend on that,
> > especially as we move to allow building multiple v6/v7 platforms together,
> > or multiple v5 platforms for that matter. I believe we don't need to
> > worry about v5+v7 at this point and can instead assume that won't ever
> > happen.
> >
> Nobody is using PJ4 as v6 architecture now. CPUv6 is used in old stepping
> of Dove and MMP2. CPU_PJ4 only enables CPU_v7 in the mainline code.
>
> If we used ARCH_PXA_V7 in arch/arm/Kconfig, we would have two ARCH for
> pxa. One is ARCH_PXA, and the other is ARCH_PXA_V7. Those v5 machine
> should be based on ARCH_PXA. And the saarb, tavorevb3 should be based
> on ARCH_PXA_V7. So we can avoid to define PXA_V7_MACH_AUTO. I think
> the logic of Kconfig could be easier.
I was referring to building different subarchitectures together.
We want to eventually be able to build a single kernel that
works on e.g. pxa95x (ARMv7) and omap2 (ARMv6), and we hope to get
there within the next few release. This is completely unrelated to
building a combination of old-world (ARMv3/v4/v5) and new-world
(ARMv6/v7) in a single kernel, which is something that we decided
not to try supporting in the forseeable future.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Haojian Zhuang <haojian.zhuang@marvell.com>,
Jason Chagas <jason.chagas@marvell.com>,
linux-kernel@vger.kernel.org, Eric Miao <eric.y.miao@gmail.com>
Subject: Re: [PATCH 17/26] ARM: pxa: pxa95x is incompatible with earlier pxa
Date: Sun, 09 Oct 2011 13:35:31 +0200 [thread overview]
Message-ID: <5678343.s7jMIvu0rV@wuerfel> (raw)
In-Reply-To: <CAN1soZyDu43EN3W5YBttdzx7qx=MLKAR1OsJC3hUdqWWxhQaew@mail.gmail.com>
On Sunday 09 October 2011 14:21:35 Haojian Zhuang wrote:
> > If we move it to arch/arm/Kconfig, I would prefer making it a global option,
> > not a pxa specific one. If we introduce a top-level CONFIG_CPU_V6PLUS
> > option, we can make a number of decisions inside of Kconfig depend on that,
> > especially as we move to allow building multiple v6/v7 platforms together,
> > or multiple v5 platforms for that matter. I believe we don't need to
> > worry about v5+v7 at this point and can instead assume that won't ever
> > happen.
> >
> Nobody is using PJ4 as v6 architecture now. CPUv6 is used in old stepping
> of Dove and MMP2. CPU_PJ4 only enables CPU_v7 in the mainline code.
>
> If we used ARCH_PXA_V7 in arch/arm/Kconfig, we would have two ARCH for
> pxa. One is ARCH_PXA, and the other is ARCH_PXA_V7. Those v5 machine
> should be based on ARCH_PXA. And the saarb, tavorevb3 should be based
> on ARCH_PXA_V7. So we can avoid to define PXA_V7_MACH_AUTO. I think
> the logic of Kconfig could be easier.
I was referring to building different subarchitectures together.
We want to eventually be able to build a single kernel that
works on e.g. pxa95x (ARMv7) and omap2 (ARMv6), and we hope to get
there within the next few release. This is completely unrelated to
building a combination of old-world (ARMv3/v4/v5) and new-world
(ARMv6/v7) in a single kernel, which is something that we decided
not to try supporting in the forseeable future.
Arnd
next prev parent reply other threads:[~2011-10-09 11:35 UTC|newest]
Thread overview: 166+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-01 20:03 [PATCH 00/26] ARM: pxa specific randconfig fixes Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-01 20:03 ` [PATCH 01/26] usb/gadget/pxa25x: is_vbus_present is gone Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-06 12:19 ` Felipe Balbi
2011-10-06 12:19 ` Felipe Balbi
2011-10-07 2:27 ` Eric Miao
2011-10-07 2:27 ` Eric Miao
2011-10-01 20:03 ` [PATCH 02/26] sound/pxa-zylonite: use a valid device for dev_err() Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-02 18:16 ` Mark Brown
2011-10-02 18:16 ` Mark Brown
2011-10-02 18:36 ` Arnd Bergmann
2011-10-02 18:36 ` Arnd Bergmann
2011-10-02 18:44 ` Mark Brown
2011-10-02 18:44 ` Mark Brown
2011-10-02 19:48 ` Arnd Bergmann
2011-10-02 19:48 ` Arnd Bergmann
2011-10-02 18:24 ` Mark Brown
2011-10-02 18:24 ` Mark Brown
2011-10-01 20:03 ` [PATCH 03/26] scsi/mvsas: use proper namespace for IRQ_* symbols Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-01 20:03 ` [PATCH 04/26] net/pxa168_eth: add missing include of interrupt.h Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 3:48 ` Eric Miao
2011-10-07 3:48 ` Eric Miao
2011-10-01 20:03 ` [PATCH 05/26] ARM: pxa: make zylonite_pxa*_init declaration match code Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 3:47 ` Eric Miao
2011-10-07 3:47 ` Eric Miao
2011-10-01 20:03 ` [PATCH 06/26] ARM: pxa: add missing header inclusions Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 5:08 ` Eric Miao
2011-10-07 5:08 ` Eric Miao
2011-10-08 8:03 ` Russell King - ARM Linux
2011-10-08 8:03 ` Russell King - ARM Linux
2011-10-08 10:23 ` Jamie Iles
2011-10-08 10:23 ` Jamie Iles
2011-10-08 10:24 ` Eric Miao
2011-10-08 10:24 ` Eric Miao
2011-10-01 20:03 ` [PATCH 07/26] ARM: pxa: mbxfb: disable broken debugfs code Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 5:10 ` Eric Miao
2011-10-07 5:10 ` Eric Miao
2011-10-01 20:03 ` [PATCH 08/26] ARM: pxa: move z2 to generic cpu_suspend Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 5:59 ` Eric Miao
2011-10-07 5:59 ` Eric Miao
2011-10-07 9:56 ` Arnd Bergmann
2011-10-07 9:56 ` Arnd Bergmann
2011-10-08 12:37 ` Eric Miao
2011-10-08 12:37 ` Eric Miao
2011-10-08 13:00 ` Arnd Bergmann
2011-10-08 13:00 ` Arnd Bergmann
2011-10-08 13:02 ` Eric Miao
2011-10-08 13:02 ` Eric Miao
2011-10-01 20:03 ` [PATCH 09/26] ARM: pxa: export symbols from pxa3xx-ulpi Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 6:01 ` Eric Miao
2011-10-07 6:01 ` Eric Miao
2011-10-01 20:03 ` [PATCH 10/26] ARM: pxa: allow selecting just one of TREO680/CENTRO Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 6:12 ` Eric Miao
2011-10-07 6:12 ` Eric Miao
2011-10-01 20:03 ` [PATCH 11/26] ARM: pxa: allow building palm27x without pxafb Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 6:19 ` Eric Miao
2011-10-07 6:19 ` Eric Miao
2011-10-07 9:57 ` Arnd Bergmann
2011-10-07 9:57 ` Arnd Bergmann
2011-10-01 20:03 ` [PATCH 12/26] ARM: pxa: pxa95x/saarb depends on pxa3xx code Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 7:28 ` Eric Miao
2011-10-07 7:28 ` Eric Miao
2011-10-07 9:59 ` Arnd Bergmann
2011-10-07 9:59 ` Arnd Bergmann
2011-10-01 20:03 ` [PATCH 13/26] ARM: pxa: use correct __iomem annotations Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 8:11 ` Eric Miao
2011-10-07 8:11 ` Eric Miao
2011-10-07 8:51 ` Russell King - ARM Linux
2011-10-07 8:51 ` Russell King - ARM Linux
2011-10-07 10:16 ` Arnd Bergmann
2011-10-07 10:16 ` Arnd Bergmann
2011-10-08 12:43 ` Eric Miao
2011-10-08 12:43 ` Eric Miao
2011-10-01 20:03 ` [PATCH 14/26] mtd: nand_h1900 never worked Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 8:21 ` Eric Miao
2011-10-07 8:21 ` Eric Miao
2011-10-16 11:38 ` Artem Bityutskiy
2011-10-16 11:38 ` Artem Bityutskiy
2011-10-01 20:03 ` [PATCH 15/26] irda/ficp: only works on some pxa models Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-07 8:22 ` Eric Miao
2011-10-07 8:22 ` Eric Miao
2011-10-01 20:03 ` [PATCH 16/26] ARM: pxa: CPU_PJ4 requires IWMMXT Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-02 16:03 ` Russell King - ARM Linux
2011-10-02 16:03 ` Russell King - ARM Linux
2011-10-02 17:46 ` Arnd Bergmann
2011-10-02 17:46 ` Arnd Bergmann
2011-10-04 0:59 ` Eric Miao
2011-10-04 0:59 ` Eric Miao
2011-10-04 7:33 ` Arnd Bergmann
2011-10-04 7:33 ` Arnd Bergmann
2011-10-01 20:03 ` [PATCH 17/26] ARM: pxa: pxa95x is incompatible with earlier pxa Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-08 2:57 ` Haojian Zhuang
2011-10-08 2:57 ` Haojian Zhuang
2011-10-08 3:21 ` Eric Miao
2011-10-08 3:21 ` Eric Miao
2011-10-08 3:32 ` Haojian Zhuang
2011-10-08 3:32 ` Haojian Zhuang
2011-10-08 13:24 ` Arnd Bergmann
2011-10-08 13:24 ` Arnd Bergmann
2011-10-09 6:21 ` Haojian Zhuang
2011-10-09 6:21 ` Haojian Zhuang
2011-10-09 6:36 ` Eric Miao
2011-10-09 6:36 ` Eric Miao
2011-10-09 6:39 ` Haojian Zhuang
2011-10-09 6:39 ` Haojian Zhuang
2011-10-09 7:28 ` Eric Miao
2011-10-09 7:28 ` Eric Miao
2011-10-09 11:31 ` Arnd Bergmann
2011-10-09 11:31 ` Arnd Bergmann
2011-10-09 11:35 ` Arnd Bergmann [this message]
2011-10-09 11:35 ` Arnd Bergmann
2011-10-01 20:03 ` [PATCH 18/26] ARM: pxa: MTD_XIP is not actually working any more Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-08 7:44 ` Eric Miao
2011-10-08 7:44 ` Eric Miao
2011-10-08 17:36 ` Nicolas Pitre
2011-10-08 17:36 ` Nicolas Pitre
2011-10-01 20:03 ` [PATCH 19/26] ARM: pxa: CPU_FREQ_TABLE is needed for CPU_FREQ Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-08 8:34 ` Eric Miao
2011-10-08 8:34 ` Eric Miao
2011-10-01 20:03 ` [PATCH 20/26] ARM: pxa: select FB_PXA on saar and tevorevb Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-08 9:50 ` Eric Miao
2011-10-08 9:50 ` Eric Miao
2011-10-08 10:07 ` Arnd Bergmann
2011-10-08 10:07 ` Arnd Bergmann
2011-10-01 20:03 ` [PATCH 21/26] ARM: pxa: select POWER_SUPPLY on raumfeld Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-08 9:59 ` Eric Miao
2011-10-08 9:59 ` Eric Miao
2011-10-01 20:03 ` [PATCH 22/26] ARM: pxa: only select SMC91x on xcep when networking is enabled Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-08 10:10 ` Eric Miao
2011-10-08 10:10 ` Eric Miao
2011-10-01 20:03 ` [PATCH 23/26] ARM: pxa: viper: select I2C_GPIO only when I2C is on Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-01 20:03 ` [PATCH 24/26] ARM: pxa: centro and treo680 need palm27x Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-08 10:20 ` Eric Miao
2011-10-08 10:20 ` Eric Miao
2011-10-08 11:31 ` Marek Vasut
2011-10-08 11:31 ` Marek Vasut
2011-10-01 20:03 ` [PATCH 25/26] ARM: pxa: eseries does not require FB Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-01 20:03 ` [PATCH 26/26] ARM: pxa: sharpsl pm needs SPI Arnd Bergmann
2011-10-01 20:03 ` Arnd Bergmann
2011-10-08 10:22 ` Eric Miao
2011-10-08 10:22 ` Eric Miao
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