linux-kernel - Re: [PATCH v3 8/8] clocksource/drivers/tegra: Set up maximum-ticks limit properly

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Message-ID: <20190619081920.GI3187@ulmo>
Date:   Wed, 19 Jun 2019 10:19:20 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 8/8] clocksource/drivers/tegra: Set up maximum-ticks
 limit properly

On Tue, Jun 18, 2019 at 05:03:58PM +0300, Dmitry Osipenko wrote:
> Tegra's timer has 29 bits for the counter and for the "load" register
> which sets counter to a load-value. The counter's value is lower than
> the actual value by 1 because it starts to decrement after one tick,
> hence the maximum number of ticks that hardware can handle equals to
> 29 bits + 1.
> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/clocksource/timer-tegra.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)

Acked-by: Thierry Reding <treding@...dia.com>

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