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ARM: convert arm/arm64 arch timer to use CLKSRC_OF init

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This converts arm and arm64 to use CLKSRC_OF DT based initialization for
the arch timer. A new function arch_timer_arch_init is added to allow for
arch specific setup.

This has a side effect of enabling sched_clock on omap5 and exynos5. There
should not be any reason not to use the arch timers for sched_clock.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
Rob Herring 2013-04-10 18:27:51 -05:00
parent f414f13f2f
commit 0583fe478a
19 changed files with 29 additions and 87 deletions
Download patch file Download diff file Expand all files Collapse all files

6
include/clocksource/arm_arch_timer.h
View file

@ -31,18 +31,12 @@
#ifdef CONFIG_ARM_ARCH_TIMER
extern int arch_timer_init(void);
extern u32 arch_timer_get_rate(void);
extern u64 (*arch_timer_read_counter)(void);
extern struct timecounter *arch_timer_get_timecounter(void);
#else
static inline int arch_timer_init(void)
{
return -ENXIO;
}
static inline u32 arch_timer_get_rate(void)
{
return 0;