AR_MAC_PCU_GEN_TIMER_TSF_SEL
if (!REG_READ(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL))
REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
REG_SET_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,
REG_CLR_BIT(ah, AR_MAC_PCU_GEN_TIMER_TSF_SEL,