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RAM for STMP157

muffss
Visitor

‎2024-11-03 09:55 PM

Hi,

I am building my STMP157 board using the reference of "STMP15X-SOM" of Olimex. In that the RAM used is K4B4G1646D-BYK0, but I am unable to find the part number in online store. Can you please help me in finding the different RAM which can be used instead of it.

If I am changing the RAM what are the changes needed to be done in the U-boot file to run the processor.

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PatrickF
ST Employee

‎2024-11-04 05:01 AM

Hi @muffss 

any DDR3L of same voltage/density/width (here 1.35V, 4Gbit with 16-bit bus) would work, probably without any changes in SW.

If needed to change DDR initialization values, you should regenerate some files using CubeMx, then recompile TF-A.

https://wiki.st.com/stm32mpu/wiki/DDRCTRL_and_DDRPHYC_device_tree_configuration

https://wiki.st.com/stm32mpu/wiki/Cross-compile_with_OpenSTLinux_SDK

Regards,

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