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RT1020 Boot from FlexSPI

Question asked by Brian Chia on Jul 17, 2018
Latest reply on Jul 30, 2018 by Carlos_Musich


I am planning a design with the MIMXRT1021DAF5A and was wondering if it is possible to boot from Serial NOR Flash over FlexSPI B?   In the Reference Manual, Table 8-1 ROM Bootloader Peripheral PinMux seems to indicate that FlexSPI B is initialized but there weren't any details on how to select channel B over channel A.  Is is possible to disable channel A or does the ROM boot loader try both channels sequentially?