IC_WAKEUP_CLEAR
REGVAL(ic0_base + IC_WAKEUP_CLEAR) = 0xffffffff;
REGVAL(ic1_base + IC_WAKEUP_CLEAR) = 0xffffffff;
REGVAL(icu_base + IC_WAKEUP_CLEAR) = irq;
REGVAL(icu_base + IC_WAKEUP_CLEAR) = mask;