Flash MX25R6435FM2IL0 interface with STM32N657

[vinoth_ta]

I am having a custom board having STM32N657I0H3Q interfaced with quad flash MX25R6435FM2IL0. 

I am unable to access (both read and write) to the flash MX25R6435FM2IL0.

I have attached Saleae capture (configured the flash in single mode only for Saleae capture). Also, debug log of EMM running in FSBL.

The eval board (DK board) is having MX66UW1G45G doing good. 

The logs looks like EMM could not access the SFDP structure.

[vinoth_ta]

The code is running fine in SRAM. Also, I am using latest version of all the tools associated with ST.