[PATCH v4 03/10] clocksource/drivers/tegra: Reset hardware state on init

Dmitry Osipenko
2019-06-03T19:05:09Z

Reset timer's hardware state to ensure that initially it is in a
predictable state.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/clocksource/timer-tegra20.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/clocksource/timer-tegra20.c b/drivers/clocksource/timer-tegra20.c
index 57e7aa2b80a3..739f83fdb318 100644
--- a/drivers/clocksource/timer-tegra20.c
+++ b/drivers/clocksource/timer-tegra20.c
@@ -132,6 +132,9 @@ static int tegra_timer_setup(unsigned int cpu)
{
struct timer_of *to = per_cpu_ptr(&tegra_to, cpu);

+ writel(0, timer_of_base(to) + TIMER_PTV);
+ writel(TIMER_PCR_INTR_CLR, timer_of_base(to) + TIMER_PCR);
+
irq_force_affinity(to->clkevt.irq, cpumask_of(cpu));
enable_irq(to->clkevt.irq);

--
2.21.0