aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/timer-mpu.c
diff options
context:
space:
mode:
authorSantosh Shilimkar <santosh.shilimkar@ti.com>2009-04-28 20:52:00 +0530
committerSantosh Shilimkar <santosh.shilimkar@ti.com>2009-06-09 13:03:59 +0530
commit39e1d4c18f34190c739f765ae56bfaa9cbbc6fdb (patch)
treefda67a3e47370f2f4a118b587c33b86b15a231fd /arch/arm/mach-omap2/timer-mpu.c
parent367cd31ee0cbc948fe3b83960b1dbf931e2eaa90 (diff)
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/timer-mpu.c')
-rw-r--r--arch/arm/mach-omap2/timer-mpu.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/timer-mpu.c b/arch/arm/mach-omap2/timer-mpu.c
new file mode 100644
index 00000000000..c1a650a9910
--- /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);
+}
+