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Transferring data from 2 FMC devices possible?

Question asked by choi.henry on Dec 27, 2015
Latest reply on Dec 28, 2015 by Nesrine M
Dear all, I have been going through U-Boot code by Emcraft on STM32F7.  They sell a board that connects a 32 MB SDRAM and a 16 MB NOR flash to STM32F746.  When interacting with the NOR flash, they put the SDRAM to FMC_SDCMR_MODE_AUTOREFRESH, citing "STM32 flash bug workaround".  I have a question to the Emcraft tech support, asking what this bug is.  Meanwhile, I skimmed through the PM and RM, and cannot find any mention on constraint of reading/writing 2 FMC devices "at the same time" (of course it should be inter-spliced).  Does anyone know of an application note on how one would interact with multiple FMC devices "at the same time"?

Thanks for reading.