Chapter 41 of "i.MX RT1050 Processor Reference Manual, Rev. 1, 03/2018" states:
Network Interconnect Bus System (NIC-301)
The NIC-301 default settings are configured by NXP's board
support package (BSP), and in most cases should not be
modified by the customer. The default settings have gone
through exhaustive testing during the validation of the part, and
have proven to work well for the part's intended target
applications. Changes to the default settings may result in a
degradation in system performance.
We've been searching for any code in NXP's SDK for this chip, looking for anything that customises the NIC-301 as stated above.
We can't find it. Can someone give us a filename and a path and package that does this? Or does the code just leave it the way it defaults on Reset or the internal chip Bootstrap set it up?