TIMER_ENABLE_EN
writel_relaxed(TIMER_ENABLE_EN, source_base + TIMER_ENABLE);
ctrl &= ~TIMER_ENABLE_EN;
ctrl &= ~TIMER_ENABLE_EN;
writel_relaxed(ctrl | TIMER_ENABLE_EN, event_base + TIMER_ENABLE);
ctrl &= ~(TIMER_ENABLE_EN | TIMER_ENABLE_CLR_ON_MATCH_EN);