2025-12-03 19:56:43
STM32MP2 PCIe bringup update: the PCIe IP has 4 MB of address space allocated to it, but touching anything past the first 2 MB seems to hang.
When I dump any of the register blocks in the first 2 MB, they all report the same Synopsys : 0550 device ID.
All of the registers are the same in each of the mirrors, with the exception of 8 bytes starting at 0x174 and 4 bytes starting at 0x728.
Somehow there has to be a way to see devices behind the root complex.
