IRQ_RTC1Hz         53 arch/arm/mach-pxa/include/mach/irqs.h #define	IRQ_RTC1Hz	PXA_IRQ(30)	/* RTC HZ Clock Tick */
IRQ_RTC1Hz         42 arch/arm/mach-sa1100/include/mach/irqs.h #define	IRQ_RTC1Hz		31	/* RTC 1 Hz clock           */