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    SubjectRe: RTC: add RTC class interface to m41t00 driver
    Actually, it'd be worth trying drivers/rtc/rtc-ds1307.c ... the M41T00 is
    one of a family of mostly-compatible RTC chips, and the ds1307 driver
    should be pretty much the least-common-denominator there. They all use
    the same I2C address, and the same register layout for the calendar/time

    I'd expect rtc-ds1307 to handle the m41t00 already, or with at most minor
    tweaks to recognize whatever's different. It should already be ignoring
    the bits in the clock/calendar registers that vary, as well as the SRAM
    and (for some other chips) the alarm. (Not that I2C has ways to tell us
    what IRQ the alarm would use, but that's a different tale!)

    - Dave
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