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authorIngo Molnar <mingo@elte.hu>2008-08-13 13:08:47 +0200
committerIngo Molnar <mingo@elte.hu>2008-08-13 13:08:47 +0200
commita12e61df4fa1cfae7a6b76976fa65a6fcb048e3f (patch)
tree957c915298b299902aa80afa7c78e94c71b3dc25 /arch/arm/mach-ixp4xx/include/mach/timex.h
parent7b27718bdb1b70166383dec91391df5534d449ee (diff)
parent30a2f3c60a84092c8084dfe788b710f8d0768cd4 (diff)
downloadop-kernel-dev-a12e61df4fa1cfae7a6b76976fa65a6fcb048e3f.zip
op-kernel-dev-a12e61df4fa1cfae7a6b76976fa65a6fcb048e3f.tar.gz
Merge commit 'v2.6.27-rc3' into x86/urgent
Diffstat (limited to 'arch/arm/mach-ixp4xx/include/mach/timex.h')
-rw-r--r--arch/arm/mach-ixp4xx/include/mach/timex.h15
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 0000000..89ce3ee
--- /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)
+
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