linux_old1/arch/arm/mach-ixp4xx/include/mach/timex.h

17 lines
429 B
C

/*
* 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 IXP4XX_TIMER_FREQ 66666000
#define CLOCK_TICK_RATE \
(((IXP4XX_TIMER_FREQ / HZ & ~IXP4XX_OST_RELOAD_MASK) + 1) * HZ)