> As long as it doesn't behave differently from the other RTC, I'm fine > with this. This is important because I don't want to carry any special > infrastructure for this driver or to have to special case this driver > later on because it is incompatible with some evolution of the > subsystem. Maybe deliberately throw away all the sub-second accuracy when accessing the time via the RTC API? That helps to make it look like an RTC. And when doing the rounding, add a constant offset of 10ms to emulate the virtual i2c bus it is hanging off, like most RTCs? Andrew