As tittle, would you kind to clarify if the time enough for SPI work after reset ? Thanks.
There is no hard requirement for "Minimum time of Reset to SPI of AD9371".
We recommend to add 1 mSec of sleep time after the HwReset() before continuing with initialization of ADRV9025 if that is not a contraint in your design.
figure out the initial calibration failure sometimes.
Can you please add more details here? Are you feeling like this delay is contributing to initial calibration failure?