How do I configure OCTOSPI2 to use a W957A8MFYA in STM32CubeIDE, the settings are not at all clear unless there's a help file that explains the settings somewhere.

[PDixo.1]

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[Tesla DeLorean]

Would suggest you look at other board examples using HyperRAM, how those are configure connected, and how the datasheet items from the non-Winbond parts related to those of the Winbond.

Also a review of the OCTOSPI peripheral in the Reference Manual of your STM32.

If you have an ST FAE, perhaps discuss with them about configuration/expectations.

[Tesla DeLorean]

STM32Cube_FW_H7_V1.8.0\Projects\STM32H735G-DK\Examples\OSPI\OSPI_HyperRAM_MemoryMapped\Src\main.c

Uses Cypress S70KL1281

https://www.infineon.com/dgdl/Infineon-S27KL0641_S27KS0641_S70KL1281_S70KS1281_3.0_V_1.8_V_64_Mb_(8_MB)_128_Mb_(16_MB)_HyperRAM_Self-Refresh_DRAM-DataSheet-v15_00-EN.pdf?fileId=8ac78c8c7d0d8da4017d0ed18c684db5&utm_source=cypress&utm_medium=referral&utm_campaign=202110_globe_en_all_integration-datasheet