[Blackfin] arch: initial generic time and clock sources

[deliverable/linux.git] / arch / blackfin / Kconfig

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 2dd1f300a5cfe8fe9c81758304f1575ed849fe72..a3cf9d0a528b9e37be6fddf1380f2a778509222a 100644 (file)
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -47,10 +47,6 @@ config GENERIC_IRQ_PROBE
        bool
        default y
 
-config GENERIC_TIME
-       bool
-       default n
-
 config GENERIC_GPIO
        bool
        default y
@@ -415,6 +411,30 @@ comment "Kernel Timer/Scheduler"
 
 source kernel/Kconfig.hz
 
+config GENERIC_TIME
+       bool "Generic time"
+       default y
+
+config GENERIC_CLOCKEVENTS
+       bool "Generic clock events"
+       depends on GENERIC_TIME
+       default y
+
+config CYCLES_CLOCKSOURCE
+       bool "Use 'CYCLES' as a clocksource (EXPERIMENTAL)"
+       depends on EXPERIMENTAL
+       depends on GENERIC_CLOCKEVENTS
+       depends on !BFIN_SCRATCH_REG_CYCLES
+       default n
+       help
+         If you say Y here, you will enable support for using the 'cycles'
+         registers as a clock source.  Doing so means you will be unable to
+         safely write to the 'cycles' register during runtime.  You will
+         still be able to read it (such as for performance monitoring), but
+         writing the registers will most likely crash the kernel.
+
+source kernel/time/Kconfig
+
 comment "Memory Setup"
 
 config MEM_SIZE