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-rw-r--r--drivers/clocksource/timer-mediatek.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/clocksource/timer-mediatek.c b/drivers/clocksource/timer-mediatek.c
index ab63b95e414f..7bcb4a3f26fb 100644
--- a/drivers/clocksource/timer-mediatek.c
+++ b/drivers/clocksource/timer-mediatek.c
@@ -60,9 +60,9 @@
* SYST_CON_EN: Clock enable. Shall be set to
* - Start timer countdown.
* - Allow timeout ticks being updated.
- * - Allow changing interrupt functions.
+ * - Allow changing interrupt status,like clear irq pending.
*
- * SYST_CON_IRQ_EN: Set to allow interrupt.
+ * SYST_CON_IRQ_EN: Set to enable interrupt.
*
* SYST_CON_IRQ_CLR: Set to clear interrupt.
*/
@@ -75,6 +75,7 @@ static void __iomem *gpt_sched_reg __read_mostly;
static void mtk_syst_ack_irq(struct timer_of *to)
{
/* Clear and disable interrupt */
+ writel(SYST_CON_EN, SYST_CON_REG(to));
writel(SYST_CON_IRQ_CLR | SYST_CON_EN, SYST_CON_REG(to));
}
@@ -111,6 +112,9 @@ static int mtk_syst_clkevt_next_event(unsigned long ticks,
static int mtk_syst_clkevt_shutdown(struct clock_event_device *clkevt)
{
+ /* Clear any irq */
+ mtk_syst_ack_irq(to_timer_of(clkevt));
+
/* Disable timer */
writel(0, SYST_CON_REG(to_timer_of(clkevt)));