AGX Xavier: How to find ethernet qos datasheet?

Hi list,
I am looking for the reference manual of Ethernet EOS controller available on Jetson AGX Xavier .
I retrieve the reference manual “Technical Reference Manual NVIDIA Xavier Series” Version:1.4p, ID:DP-09253-002 but
there is no register description for Ethernet EOS: there a few references of “ETHER_QOS_x” but that all…

Can you point me out the documentation for the Ethernet controller please?