Commit 378252b6 authored May 06, 2020 by Paul Cercueil Committed by Alexandre Belloni May 11, 2020

rtc: ingenic: Reset regulator register in probe



The regulator register specifies how many input clock cycles (minus one)
are contained in one tick of the 1 Hz clock.

Since this register can contain bogus values after the system boots, it
needs to be reset in the probe register, otherwise the RTC may count way
to slow or way too fast.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200505221336.222313-7-paul@crapouillou.net


Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

parent 15eeadd8

drivers/rtc/rtc-jz4740.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -372,6 +372,9 @@ static int jz4740_rtc_probe(struct platform_device *pdev)
		rate = clk_get_rate(clk);
		jz4740_rtc_set_wakeup_params(rtc, np, rate);

		/* Each 1 Hz pulse should happen after (rate) ticks */
		jz4740_rtc_reg_write(rtc, JZ_REG_RTC_REGULATOR, rate - 1);

		ret = rtc_register_device(rtc->rtc);
		if (ret)
		return ret;

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