ARM: OMAP: Enable dynamic tick timer for OMAP

Enables dynamic tick timer for OMAP.
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap/Kconfig

@@ -93,6 +93,31 @@ config OMAP_32K_TIMER_HZ
 	  Kernel internal timer frequency should be a divisor of 32768,
 	  such as 64 or 128.
 
+config NO_IDLE_HZ
+	bool "Dynamic Tick Timer"
+	depends on OMAP_32K_TIMER
+	help
+	  Select this option if you want to disable continuous timer ticks
+	  and have them programmed one at a time from the idle loop. This
+	  option saves power as the system does not need to exit idle state
+	  because of a timer interrupt. If you have this option selected,
+	  you still need to enable dynamic tick using the sysfs interface.
+	  By default dynamic tick is disabled during the boot, and can be
+	  manually enabled with:
+
+ 	  echo 1 > /sys/devices/platform/timer0/dyn_tick
+
+	  If you want dynamic tick automatically enabled during boot, select
+	  also NO_IDLE_HZ_ENABLED below.
+
+config NO_IDLE_HZ_ENABLED
+	bool "Enable Dynamic Tick Timer by default"
+	depends on NO_IDLE_HZ
+	default n
+	help
+	  Select this option if you want dynamic tick turned on by default
+	  at startup.
+
 choice
 	prompt "Low-level debug console UART"
 	depends on ARCH_OMAP