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| author | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2009-04-28 17:22:00 +0200 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2009-06-09 09:33:59 +0200 |
| commit | 39e1d4c18f34190c739f765ae56bfaa9cbbc6fdb (patch) | |
| tree | fda67a3e47370f2f4a118b587c33b86b15a231fd /arch/arm/mach-omap2 | |
| parent | ARM: OMAP4: SMP: Add OMAP4430 SMP board files (diff) | |
| download | linux-39e1d4c18f34190c739f765ae56bfaa9cbbc6fdb.tar.xz linux-39e1d4c18f34190c739f765ae56bfaa9cbbc6fdb.zip | |
ARM: OMAP4: SMP: Add mpu timer support for OMAP4430
This patch adds SMP platform specific parts for local(mpu) timer support
for OMAP4430 platform. Each Cortex-a9 core has it's own local timer in the
MPU domain. These timers are not in wakeup domain.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/timer-gp.c | 4 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/timer-mpu.c | 34 |
2 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/timer-gp.c b/arch/arm/mach-omap2/timer-gp.c index 2ce474a9d2b6..97eeeebcb066 100644 --- a/arch/arm/mach-omap2/timer-gp.c +++ b/arch/arm/mach-omap2/timer-gp.c @@ -38,6 +38,7 @@ #include <asm/mach/time.h> #include <mach/dmtimer.h> +#include <asm/localtimer.h> /* MAX_GPTIMER_ID: number of GPTIMERs on the chip */ #define MAX_GPTIMER_ID 12 @@ -229,6 +230,9 @@ static void __init omap2_gp_clocksource_init(void) static void __init omap2_gp_timer_init(void) { +#ifdef CONFIG_LOCAL_TIMERS + twd_base = IO_ADDRESS(OMAP44XX_LOCAL_TWD_BASE); +#endif omap_dm_timer_init(); omap2_gp_clockevent_init(); diff --git a/arch/arm/mach-omap2/timer-mpu.c b/arch/arm/mach-omap2/timer-mpu.c new file mode 100644 index 000000000000..c1a650a9910f --- /dev/null +++ b/arch/arm/mach-omap2/timer-mpu.c @@ -0,0 +1,34 @@ +/* + * The MPU local timer source file. In OMAP4, both cortex-a9 cores have + * own timer in it's MPU domain. These timers will be driving the + * linux kernel SMP tick framework when active. These timers are not + * part of the wake up domain. + * + * Copyright (C) 2009 Texas Instruments, Inc. + * + * Author: + * Santosh Shilimkar <santosh.shilimkar@ti.com> + * + * This file is based on arm realview smp platform file. + * Copyright (C) 2002 ARM Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/init.h> +#include <linux/smp.h> +#include <linux/clockchips.h> +#include <asm/irq.h> +#include <asm/smp_twd.h> +#include <asm/localtimer.h> + +/* + * Setup the local clock events for a CPU. + */ +void __cpuinit local_timer_setup(struct clock_event_device *evt) +{ + evt->irq = INT_44XX_LOCALTIMER_IRQ; + twd_timer_setup(evt); +} + |