1 files changed, 15 insertions, 0 deletions

diff --git a/arch/arm/mach-ixp4xx/include/mach/timex.h b/arch/arm/mach-ixp4xx/include/mach/timex.h
new file mode 100644
index 000000000000..89ce3ee84698
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/include/mach/timex.h
@@ -0,0 +1,15 @@
+/*
+ * arch/arm/mach-ixp4xx/include/mach/timex.h
+ * 
+ */
+
+#include <mach/hardware.h>
+
+/*
+ * We use IXP425 General purpose timer for our timer needs, it runs at 
+ * 66.66... MHz. We do a convulted calculation of CLOCK_TICK_RATE b/c the
+ * timer register ignores the bottom 2 bits of the LATCH value.
+ */
+#define FREQ 66666666
+#define CLOCK_TICK_RATE (((FREQ / HZ & ~IXP4XX_OST_RELOAD_MASK) + 1) * HZ)
+