rtc/ds1374.c mistakes the "don't enable the oscillator" bit for a "do enable the oscillator bit" and sets it to 1, stopping the clock. My guess is that nobody has actually used rtc_set or rtc_reset with this driver.
We've been using this chip for a few years with a proprietary OS and are now switching to u-boot and Linux. I revised the u-boot driver based on our stable driver. Besides fixing the oscillator bit, I set it up to read all the registers with a single IIC transaction for efficiency and to see any error code from the IIC subsystem.
I would attach the new driver here but I can't figure out how. I'm typing through a broken "hello new user, we don't yet trust you" web page. If somebody could send instructions to andrew@cesa.opbu.xerox.com, I'd like to submit this revision.
Andrew Klossner