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CONFIG_RTC_DRV_DS1307_CENTURY: Century bit support for rtc-ds1307

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The Linux kernel configuration item CONFIG_RTC_DRV_DS1307_CENTURY:

Help text

The DS1307 driver suffered from a bug where it was enabling the century bit inconditionnally but never used it when reading the time. It made the driver unable to support dates beyond 2099. Setting this option will add proper support for the century bit but if the time was previously set using a kernel predating this option, reading the date will return a date in the next century. To solve that, you could boot a kernel without this option set, set the RTC date and then boot a kernel with this option set.



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