ARM: versatile: convert sched_clock() to use new infrastructure

Convert versatile platforms to use the new sched_clock() infrastructure
for extending 32bit counters to full 64-bit nanoseconds.

Tested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 10 insertions, 0 deletions

diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 07c08151dfe6..3d653e05b75d 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -52,6 +52,8 @@
 #include <mach/irqs.h>
 #include <plat/timer-sp.h>
 
+#include <plat/sched_clock.h>
+
 #include "core.h"
 
 /* used by entry-macro.S and platsmp.c */
@@ -658,6 +660,12 @@ void realview_leds_event(led_event_t ledevt)
 #endif  /* CONFIG_LEDS */
 
 /*
+ * The sched_clock counter
+ */
+#define REFCOUNTER              (__io_address(REALVIEW_SYS_BASE) + \
+                                 REALVIEW_SYS_24MHz_OFFSET)
+
+/*
  * Where is the timer (VA)?
  */
 void __iomem *timer0_va_base;
@@ -672,6 +680,8 @@ void __init realview_timer_init(unsigned int timer_irq)
 {
         u32 val;
 
+        versatile_sched_clock_init(REFCOUNTER, 24000000);
+
         /* 
          * set clock frequency: 
          *      REALVIEW_REFCLK is 32KHz