Re: [RFC PATCH v3 0/7] Add virtio_rtc module and related changes

[Peter Hilber]

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