PG threshold for AVDD and LVDD is set a bit low
For IC6 and IC8, the PG threshold is set at 1.55V (14% below the nominal 1.8V). The component that depends on these power rails, the ADC, recommends a minimum of 1.7V to function correctly. If we factor in that the power delivery network (plane resistance and inductance + decoupling network) will cause some slight voltage drop, this threshold should be set to some value above 1.7V.