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File: [Development] / linux-2.6-xfs / arch / arm / mach-ixp4xx / include / mach / timex.h (download)

Revision 1.1, Fri Oct 3 17:46:45 2008 UTC (9 years ago) by lachlan.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD

Merge up to 2.6.27-rc8
Merge of 2.6.x-xfs-melb:linux:32254b by kenmcd.

/*
 * 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)