rtc: rtc-mv: Add support for clk to avoid lockups
commit 89c58c19 upstream. The Marvell RTC on Kirkwood makes use of the runit clock. Ensure the driver clk_prepare_enable() this clock, otherwise there is a danger the SoC will lockup when accessing RTC registers with the clock disabled. Reported-by:Simon Baatz <gmbnomis@gmail.com> Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Tested-by:
Simon Baatz <gmbnomis@gmail.com> Signed-off-by:
Jason Cooper <jason@lakedaemon.net> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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