054beaac09
This commit enables optional reset of the RTC, in case its registers' contents did not sustain the reboot or power-off/on sequence. Without it, further usage of RTC is impossible (e.g. writing values to RTC_TIME register will not succeed). The reset is performed only if Clock Correction register does not comprise RTC_NOMINAL_TIMING, what helps to distinguish, whether the software configured RTC before or it comprises the default value. Submitted by: Bartosz Szczepanek <bsz@semihalf.com> Obtained from: Semihalf Sponsored by: Stormshield Differential revision: https://reviews.freebsd.org/D10900