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Date:	Thu, 03 Jan 2013 10:29:23 -0700
From:	Stephen Warren <>
To:	Tony Prisk <>
CC:	Arnd Bergmann <>, Olof Johansson <>,,,,
	John Stultz <>,
	Thomas Gleixner <>
Subject: Re: [PATCH 1/2] timer: vt8500: Move system timer to clocksource

On 01/02/2013 08:25 PM, Tony Prisk wrote:
> Move mach-vt8500/timer.c to drivers/clocksource/vt8500_timer.c
> and make necessary changes to Kconfig and Makefile.
> vt8500_timer is moved from vt8500.c to clocksource/vt8500_timer.c
> and added to common.h for reference from the board descriptor.

> diff --git a/arch/arm/mach-vt8500/common.h b/arch/arm/mach-vt8500/common.h

> +/* defined in drivers/clocksource/vt8500_timer.c */
> +extern struct sys_timer vt8500_timer;
> +void __init vt8500_timer_init(void);

struct sys_timer has been deleted; the patches to do so are in the most
recent 2 linux-next. Another advantage of this change if your SoC
supports DT is that you don't need to explicitly prototype a separate
struct or function per clocksource driver, but board files can simply
call clocksource_of_init(), and the core code will look up the
appropriate clocksource driver to initialize using DT.

You can find the series at:


I believe that branch should be stable now unless any bugs are found so
you can base your changes on it; I plan to send a pull request to
include that branch in arm-soc tomorrow morning.
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