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rtc: mpc5121: set range
The datasheet states that 4052 is the maximum value for year. However, the mpc5121 read_time and set_time function abuse the target time register instead of using the broken down time so it is limited to 2106. Link: https://lore.kernel.org/r/20200306074404.58909-3-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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@ -352,6 +352,8 @@ static int mpc5121_rtc_probe(struct platform_device *op)
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rtc->rtc->ops = &mpc5200_rtc_ops;
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rtc->rtc->uie_unsupported = 1;
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rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_0000;
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rtc->rtc->range_max = 65733206399ULL; /* 4052-12-31 23:59:59 */
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if (of_device_is_compatible(op->dev.of_node, "fsl,mpc5121-rtc")) {
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u32 ka;
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@ -362,6 +364,13 @@ static int mpc5121_rtc_probe(struct platform_device *op)
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out_be32(&rtc->regs->keep_alive, ka);
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}
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rtc->rtc->ops = &mpc5121_rtc_ops;
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/*
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* This is a limitation of the driver that abuses the target
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* time register, the actual maximum year for the mpc5121 is
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* also 4052.
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*/
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rtc->rtc->range_min = 0;
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rtc->rtc->range_max = U32_MAX;
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}
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err = rtc_register_device(rtc->rtc);
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