From: Dmitry Osipenko <digetx@gmail.com>
To: Daniel Lezcano <daniel.lezcano@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Joseph Lo <josephl@nvidia.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>
Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v1 3/7] clocksource/drivers/tegra: Reset hardware state on init
Date: Thu, 25 Apr 2019 02:14:40 +0300 [thread overview]
Message-ID: <20190424231444.20876-4-digetx@gmail.com> (raw)
In-Reply-To: <20190424231444.20876-1-digetx@gmail.com>
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 508ca4cdbc60..01d713f20a85 100644
--- a/drivers/clocksource/timer-tegra20.c
+++ b/drivers/clocksource/timer-tegra20.c
@@ -145,6 +145,9 @@ 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
next prev parent reply other threads:[~2019-04-24 23:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-24 23:14 [PATCH v1 0/7] NVIDIA Tegra clocksource improvements and clean up Dmitry Osipenko
2019-04-24 23:14 ` [PATCH v1 1/7] clocksource/drivers/tegra: Support per-CPU timers on all Tegra's Dmitry Osipenko
2019-04-24 23:14 ` [PATCH v1 2/7] clocksource/drivers/tegra: Unify timer code Dmitry Osipenko
2019-04-24 23:14 ` Dmitry Osipenko [this message]
2019-04-24 23:14 ` [PATCH v1 4/7] clocksource/drivers/tegra: Replace readl/writel with relaxed versions Dmitry Osipenko
2019-04-24 23:14 ` [PATCH v1 5/7] clocksource/drivers/tegra: Release all IRQ's on request_irq() error Dmitry Osipenko
2019-04-24 23:14 ` [PATCH v1 6/7] clocksource/drivers/tegra: Minor code clean up Dmitry Osipenko
2019-04-24 23:14 ` [PATCH v1 7/7] clocksource/drivers/tegra: Use SPDX identifier Dmitry Osipenko
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