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| author | Will Deacon <will.deacon@arm.com> | 2010-07-09 14:52:09 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-09 15:21:51 +0200 |
| commit | bde28b846e7e0ea6fea78f6ad1c43091fdf4d3e0 (patch) | |
| tree | a7510112dfa0a6733add6a97ed0d2ea23740141f /arch | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rol... (diff) | |
| download | linux-bde28b846e7e0ea6fea78f6ad1c43091fdf4d3e0.tar.xz linux-bde28b846e7e0ea6fea78f6ad1c43091fdf4d3e0.zip | |
ARM: 6218/1: Versatile Express: add support for local timers on CA9X4 daughterboard
This patch adds support for the Cortex-A9 local timers available when
using the CA9X4 daughterboard with the Versatile Express.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig | 5 | ||||
| -rw-r--r-- | arch/arm/mach-vexpress/ct-ca9x4.c | 2 | ||||
| -rw-r--r-- | arch/arm/mach-vexpress/include/mach/ct-ca9x4.h | 1 |
3 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 98922f7d2d12..7b117b1b0884 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1172,9 +1172,10 @@ config HOTPLUG_CPU config LOCAL_TIMERS bool "Use local timer interrupts" depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ - REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) + REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \ + ARCH_U8500 || ARCH_VEXPRESS_CA9X4) default y - select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) + select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_VEXPRESS || ARCH_OMAP4 || ARCH_U8500) help Enable support for local timers on SMP platforms, rather then the legacy IPI broadcast method. Local timers allows the system diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c index 6353459bb567..577df6cccb08 100644 --- a/arch/arm/mach-vexpress/ct-ca9x4.c +++ b/arch/arm/mach-vexpress/ct-ca9x4.c @@ -16,6 +16,7 @@ #include <asm/hardware/gic.h> #include <asm/mach-types.h> #include <asm/pmu.h> +#include <asm/smp_twd.h> #include <mach/clkdev.h> #include <mach/ct-ca9x4.h> @@ -53,6 +54,7 @@ static struct map_desc ct_ca9x4_io_desc[] __initdata = { static void __init ct_ca9x4_map_io(void) { + twd_base = MMIO_P2V(A9_MPCORE_TWD); v2m_map_io(ct_ca9x4_io_desc, ARRAY_SIZE(ct_ca9x4_io_desc)); } diff --git a/arch/arm/mach-vexpress/include/mach/ct-ca9x4.h b/arch/arm/mach-vexpress/include/mach/ct-ca9x4.h index 8650f04136ef..f9e2f8d22962 100644 --- a/arch/arm/mach-vexpress/include/mach/ct-ca9x4.h +++ b/arch/arm/mach-vexpress/include/mach/ct-ca9x4.h @@ -28,6 +28,7 @@ #define A9_MPCORE_SCU (CT_CA9X4_MPIC + 0x0000) #define A9_MPCORE_GIC_CPU (CT_CA9X4_MPIC + 0x0100) #define A9_MPCORE_GIT (CT_CA9X4_MPIC + 0x0200) +#define A9_MPCORE_TWD (CT_CA9X4_MPIC + 0x0600) #define A9_MPCORE_GIC_DIST (CT_CA9X4_MPIC + 0x1000) /* |