writel(0, base + TIMER_CTRL); ... ... writel(xxx | TIMER_CTRL_PERIODIC, base + TIMER_CTRL); The timer is just temporarily disabled, and it will be set to periodic mode later. The description of the field TimerMode of the register TimerXControl as shown below: 0 = Timer module is in free-running mode (default) 1 = Timer module is in periodic mode. Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx> --- drivers/clocksource/timer-sp804.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/clocksource/timer-sp804.c b/drivers/clocksource/timer-sp804.c index 097f5a83163c6e1..a443f392a8e7d63 100644 --- a/drivers/clocksource/timer-sp804.c +++ b/drivers/clocksource/timer-sp804.c @@ -76,7 +76,6 @@ int __init sp804_clocksource_and_sched_clock_init(void __iomem *base, if (rate < 0) return -EINVAL; - /* setup timer 0 as free-running clocksource */ writel(0, base + TIMER_CTRL); writel(0xffffffff, base + TIMER_LOAD); writel(0xffffffff, base + TIMER_VALUE); -- 1.8.3
