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Visitor II
March 5, 2026
Question

STM32MP25* DDR_A19 mapping problem

  • March 5, 2026
  • 0 replies
  • 88 views

Hello,

I am testing a custom board based on STM32MP257FAI3 with two DDR4 MT40A512G16

And STM32DDRFW-UTIL cann't pass through PHY initialization.

I found that CubeMX 6.17.0 still allows DDR A19 pin mapping, despite the pin A19 isn't assignable for both DDR3 and DDR4. (STM32CubeMX 6.12.1 released). So I've assigned BA0 signal to it on PCB. And I think this cause STM32DDRFW-UTIL to be failed.

Is there any way to resolve this programmatically?