From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 05/14] ARM: integrator: use clocksource_of_init for sp804
Date: Fri, 15 Mar 2013 11:54:22 +0000 [thread overview]
Message-ID: <20130315115422.GG4977@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <513F7EBD.80207@gmail.com>
On Tue, Mar 12, 2013 at 02:15:09PM -0500, Rob Herring wrote:
> You are breaking existing dtb's changing this, but this is wrong for
> other reasons. The integrator does not have an SP804. It is the same
> programming model,
No, it is not the same programming model. It is a subset of the model.
Integrator/AP is only 16-bit, and needs to have a prescaler configured
according to the clockrate. Integrator/CP and later platforms have
SP804, which looks the same, but is 32-bit instead.
If you look at arch/arm/include/asm/hardware/arm_timer.h, you will see
that I fully documented what registers and bits are present on each
platform of AP, CP, Versatile/AB,PB and Realview.
Note that even through the CP and Versatile platforms are both called
SP804, there are subtle differences between the implementations.
next prev parent reply other threads:[~2013-03-15 11:54 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-12 17:08 [PATCH v2 00/14] add hisilicon soc support Haojian Zhuang
2013-03-12 17:08 ` [PATCH v2 01/14] clocksource: move sp timer driver Haojian Zhuang
2013-03-12 18:11 ` Arnd Bergmann
2013-03-13 2:20 ` Haojian Zhuang
2013-03-12 19:08 ` Russell King - ARM Linux
2013-03-12 17:08 ` [PATCH v2 02/14] clocksource: sp804: add device tree support Haojian Zhuang
2013-03-12 18:14 ` Arnd Bergmann
2013-03-12 18:51 ` Arnd Bergmann
2013-03-12 18:53 ` Rob Herring
2013-03-12 17:08 ` [PATCH v2 03/14] clocksource: sp804: append CONFIG_OF Haojian Zhuang
2013-03-12 19:17 ` Arnd Bergmann
2013-03-13 3:25 ` Haojian Zhuang
2013-03-14 13:48 ` Arnd Bergmann
2013-03-12 17:08 ` [PATCH v2 04/14] ARM: highbank: use clocksource_of_init for sp804 Haojian Zhuang
2013-03-12 17:08 ` [PATCH v2 05/14] ARM: integrator: " Haojian Zhuang
2013-03-12 18:54 ` Arnd Bergmann
2013-03-13 2:00 ` Haojian Zhuang
2013-03-13 5:25 ` Linus Walleij
2013-03-12 19:15 ` Rob Herring
2013-03-12 19:33 ` Arnd Bergmann
2013-03-12 20:52 ` Rob Herring
2013-03-13 2:04 ` Haojian Zhuang
2013-03-13 6:41 ` Linus Walleij
2013-03-13 7:09 ` Haojian Zhuang
2013-03-13 8:43 ` Arnd Bergmann
2013-03-13 9:00 ` Linus Walleij
2013-03-15 12:15 ` Russell King - ARM Linux
2013-03-15 13:59 ` Linus Walleij
2013-03-13 13:56 ` Rob Herring
2013-03-13 9:03 ` Linus Walleij
2013-03-15 11:54 ` Russell King - ARM Linux [this message]
2013-03-13 6:35 ` Linus Walleij
2013-03-12 17:08 ` [PATCH v2 06/14] ARM: vexpress: " Haojian Zhuang
2013-03-12 17:08 ` [PATCH v2 07/14] ARM: debug: support debug ll on hisilicon soc Haojian Zhuang
2013-03-12 17:08 ` [PATCH v2 08/14] clk: hs: add clock support Haojian Zhuang
2013-03-12 19:00 ` Arnd Bergmann
2013-03-13 4:08 ` Haojian Zhuang
2013-03-12 17:08 ` [PATCH v2 09/14] ARM: hs: add board support with device tree Haojian Zhuang
2013-03-12 17:08 ` [PATCH v2 10/14] ARM: hs: enable hi4511 " Haojian Zhuang
2013-03-12 17:08 ` [PATCH v2 11/14] ARM: config: append arch hs into multi defconfig Haojian Zhuang
2013-03-12 17:08 ` [PATCH v2 12/14] Document: append hisilicon clock binding Haojian Zhuang
2013-03-12 17:08 ` [PATCH v2 13/14] Document: dts: create hisilicon document Haojian Zhuang
2013-03-12 17:08 ` [PATCH v2 14/14] Document: add device tree binding file for sp804 Haojian Zhuang
2013-03-12 19:02 ` Arnd Bergmann
2013-03-13 1:45 ` Haojian Zhuang
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