>>>>> "Alexandre" == Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> writes: > On 09/06/2022 16:50:03+0200, Peter Korsgaard wrote: >> >>>>> "Srinivas" == Srinivas Neeli <srinivas.neeli@xxxxxxxxxx> writes: >> >> > Zynqmp RTC controller has a calibration feature to compensate >> > time deviation due to input clock inaccuracy. >> > Set and get calibration API's are used for setting and getting >> > calibration value from the controller calibration register. >> > As per RTC spec default calibration value is 0x7FFF. >> >> Where do you see that? ug1085 rev2.2 still lists: >> >> Programming Sequences >> init rtc >> 1. Write the value 0019_8231h into the calibration register, CALIB_WRITE. >> > This is a very weird value. Last time I had a look, I couldn't find an > explanation for it. Agreed. I am not arguing that it is sensible, I just wondered where this new value comes from? -- Bye, Peter Korsgaard
