On 13.03.24 21:12, Andrew Lunn wrote: >> 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 The truncating to whole seconds is already done. As to the offset, I do not understand how this would help. I can read out my CMOS RTC in ~50 us. Thanks for the comment, Peter