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ARM: EXYNOS4: Implement kernel timers using MCT

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The Multi-Core Timer(MCT) of EXYNOS4 is designed for implementing
clock source timer and clock event timers. This patch implements
1 clock source timer with 64 bit free running counter of MCT and
2 clock event timers with two of 31-bit tick counters.

Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Changhwan Youn
2011-03-11 10:39:57 +09:00
committed by Kukjin Kim
parent 614a392e1c
commit 30d8bead5a
5 changed files with 487 additions and 2 deletions
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2
arch/arm/Kconfig
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@@ -1366,7 +1366,7 @@ config LOCAL_TIMERS
bool "Use local timer interrupts"
depends on SMP
default y
select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
select HAVE_ARM_TWD if (!ARCH_MSM_SCORPIONMP && !EXYNOS4_MCT)
help
Enable support for local timers on SMP platforms, rather then the
legacy IPI broadcast method. Local timers allows the system