I also agree with Vojtech. Using the NXP support forum has been an extremely frustrating experience and it is rare that one gets a straight or complete answer. I am also regularly insulted with the all too common RTFM (read the %^* manual) responses. I can appreciate that NXP support, as relative experts in MCUXpresso and NXP products, can get frustrated when customers ask these sort of questions over and over but please try to understand that the issue is not stupidity, laziness or illiteracy on the part of the customer. The issue is the staggering volume of information available and establishing a context within all of that information, especially when new to the NXP product family. In the case of the RT105x for example, the user manual alone is over 3500 pages, the various mfgtool documentation is over 200, the j-link documentation about 250-300 pages, the MCUXpresso documentation in the 100s, etc. etc.
Overall I feel that the NXP forums are notably hostile toward developers compared to say ST, Microchip, Atmel etc. NXP would be wise to follow the lead of these companies when it comes to developer relations.