Messages in this thread | | | Date | Mon, 4 Jul 2016 22:24:04 +0200 | From | Boris Brezillon <> | Subject | Re: [PATCH] clocksource: timer-atmel-pit: enable mck |
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On Mon, 4 Jul 2016 18:00:09 +0200 Alexandre Belloni <alexandre.belloni@free-electrons.com> wrote:
> mck is needed to get the PIT working. Explicitly prepare_enable it instead > of assuming it is enabled. > > This solves an issue were the system is freezing when the ETM/ETB drivers
^ where
> are enabled. > > Reported-by: Olivier Schonken <olivier.schonken@gmail.com> > Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
> --- > drivers/clocksource/timer-atmel-pit.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/clocksource/timer-atmel-pit.c b/drivers/clocksource/timer-atmel-pit.c > index d911c5dca8f1..fcc97711cd79 100644 > --- a/drivers/clocksource/timer-atmel-pit.c > +++ b/drivers/clocksource/timer-atmel-pit.c > @@ -248,6 +248,9 @@ static void __init at91sam926x_pit_dt_init(struct device_node *node) > if (IS_ERR(data->mck)) > panic(pr_fmt("Unable to get mck clk\n")); > > + if (clk_prepare_enable(data->mck)) > + panic(pr_fmt("Unable to enable mck\n")); > + > /* Get the interrupts property */ > data->irq = irq_of_parse_and_map(node, 0); > if (!data->irq)
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