Messages in this thread Patch in this message | | | From | Daniel Lezcano <> | Subject | [PATCH 1/3] clocksource/drivers/timer-atmel-pit: Enable mck clock | Date | Fri, 26 Aug 2016 16:20:43 +0200 |
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From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
mck is needed to get the PIT working. Explicitly prepare_enable it instead of assuming it is enabled.
This solves an issue where the system is freezing when the ETM/ETB drivers are enabled.
Reported-by: Olivier Schonken <olivier.schonken@gmail.com> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> --- drivers/clocksource/timer-atmel-pit.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/clocksource/timer-atmel-pit.c b/drivers/clocksource/timer-atmel-pit.c index 1ffac0c..3494bc5 100644 --- a/drivers/clocksource/timer-atmel-pit.c +++ b/drivers/clocksource/timer-atmel-pit.c @@ -261,6 +261,12 @@ static int __init at91sam926x_pit_dt_init(struct device_node *node) return PTR_ERR(data->mck); } + ret = clk_prepare_enable(data->mck); + if (ret) { + pr_err("Unable to enable mck\n"); + return ret; + } + /* Get the interrupts property */ data->irq = irq_of_parse_and_map(node, 0); if (!data->irq) { -- 1.9.1
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