On Wed, Mar 20, 2019 at 12:30 PM Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> wrote: > The SH RTC is a BCD RTC with some version having 4 digits for the year. > > The range for the RTCs with only 2 digits for the year was unfortunately > shifted to handle 1999 to 2098. > > Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> > --- a/include/linux/rtc.h > +++ b/include/linux/rtc.h > @@ -165,6 +165,7 @@ struct rtc_device { > #define RTC_TIMESTAMP_BEGIN_1900 -2208989361LL /* 1900-01-01 00:00:00 */ mktime64(1900, 1, 1, 0, 0, 0) = -2208988800 ?? Is this due to leap seconds, and mktime64() is valid for 1970 and later only? Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds