incorrect voltage translator for FMC JTAG signals
U4 (page 14) is used to translate voltage from FMC_VADJ to P3V3 for the FMC JTAG signals.
But according to ANSI/VITA 57.1-2019:
Rule 5.66: The FMC JTAG signals shall require LVTTL (3.3V) levels on the JTAG signals.
So U4 should be removed.