linux-vybrid_public/arch/arm/mach-pxa/include/mach/timex.h

/*
 * arch/arm/mach-pxa/include/mach/timex.h
 *
 * Author:	Nicolas Pitre
 * Created:	Jun 15, 2001
 * Copyright:	MontaVista Software Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

/* Various drivers are still using the constant of CLOCK_TICK_RATE, for
 * those drivers to at least work, the definition is provided here.
 *
 * NOTE: this is no longer accurate when multiple processors and boards
 * are selected, newer drivers should not depend on this any more.  Use
 * either the clocksource/clockevent or get this at run-time by calling
 * get_clock_tick_rate() (as defined in generic.c).
 */

#if defined(CONFIG_PXA25x)
/* PXA250/210 timer base */
#define CLOCK_TICK_RATE 3686400
#elif defined(CONFIG_PXA27x)
/* PXA27x timer base */
#ifdef CONFIG_MACH_MAINSTONE
#define CLOCK_TICK_RATE 3249600
#else
#define CLOCK_TICK_RATE 3250000
#endif
#else
#define CLOCK_TICK_RATE 3250000
#endif