[PATCH 07/25] clocksource/drivers/tegra: Reset hardware state on init

[Daniel Lezcano]

From: Dmitry Osipenko <dig...@gmail.com>

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

Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
Acked-By: Peter De Schrijver <pdeschrij...@nvidia.com>
Signed-off-by: Daniel Lezcano <daniel.lezc...@linaro.org>
---
 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 acd68c77fa91..3e4f12aee8df 100644
--- a/drivers/clocksource/timer-tegra20.c
+++ b/drivers/clocksource/timer-tegra20.c
@@ -123,6 +123,9 @@ 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);
 
-- 
2.17.1