The following warning occurs in the PAR report:
WARNING:ConstraintSystem:123 - Constraint '<TIMEGRP TG_CLK_RISE = RISING TIMEGRP "TNM_CLK";>
[TOP.pcf(51749)]' includes bel 'u_oserdes_cpt' which has multiple
clock pins. Any timing calculations for this constraint will apply to all RISING clock pins on that bel.
What is the purpose of this message?