I've spent nearly two days trying to figure out how to wire up SPI from an STM32 to this GateMateA1 dev board, unable to find the associations between schematic pins and physical pins. I tried Pmod1, BANK_MISC1, then Pmod1 again, after which I moved to BANK_NB1 just because I saw the voltage selector jumpers. I found out that the leftmost pins (when looking at the board with the silkscreen text in the natural, readable orientation) are V (bottom) and GND (top), V being the voltage that's selected using the jumper (I picked the max value, 2V5, since the STM32 operates at 3V3, and placed a 1k resistor in series with each of the four SPI pins). I figured the rest was bidirectional GPIO. after that, it took me quite a while to correctly set up my constraints such that they matched the actual pins that I picked. I couldn't find any (at all) SPI setup resources for this board, so I decided to share mine:
Pin_in "spi_sck" Loc = "IO_NB_B0"; # top pos 2 <- STM32 PA5 (D13)
Pin_in "spi_cs_n" Loc = "IO_