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-rw-r--r--arch/arm/Kconfig1
-rw-r--r--arch/arm/plat-mxc/time.c16
2 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 599e163..f4027ab 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -362,6 +362,7 @@ config ARCH_MXC
select GENERIC_CLOCKEVENTS
select ARCH_REQUIRE_GPIOLIB
select CLKDEV_LOOKUP
+ select HAVE_SCHED_CLOCK
help
Support for Freescale MXC/iMX-based family of processors
diff --git a/arch/arm/plat-mxc/time.c b/arch/arm/plat-mxc/time.c
index 0142e4b..2237ff8 100644
--- a/arch/arm/plat-mxc/time.c
+++ b/arch/arm/plat-mxc/time.c
@@ -27,6 +27,7 @@
#include <linux/clk.h>
#include <mach/hardware.h>
+#include <asm/sched_clock.h>
#include <asm/mach/time.h>
#include <mach/common.h>
@@ -128,6 +129,20 @@ static struct clocksource clocksource_mxc = {
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
+static DEFINE_CLOCK_DATA(cd);
+unsigned long long notrace sched_clock(void)
+{
+ cycle_t cyc = clocksource_mxc.read(&clocksource_mxc);
+
+ return cyc_to_sched_clock(&cd, cyc, (u32)~0);
+}
+
+static void notrace mxc_update_sched_clock(void)
+{
+ cycle_t cyc = clocksource_mxc.read(&clocksource_mxc);
+ update_sched_clock(&cd, cyc, (u32)~0);
+}
+
static int __init mxc_clocksource_init(struct clk *timer_clk)
{
unsigned int c = clk_get_rate(timer_clk);
@@ -137,6 +152,7 @@ static int __init mxc_clocksource_init(struct clk *timer_clk)
else
clocksource_mxc.read = mx1_2_get_cycles;
+ init_sched_clock(&cd, mxc_update_sched_clock, 32, c);
clocksource_register_hz(&clocksource_mxc, c);
return 0;