If you are not using EC2 RGMII in your design, unused EC2 RGMII pins should e terminated as recommended in T1040 family Design Checklist (application note AN4825), Table 20, Section "EC2 in RGMII mode".
This document is available for download from T1042 Product Page, "Documentation" tab:
QorIQ® T1042 and T1022 Multicore Communications Processors|NXP
Have a great day,
Alexander
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