I don't have a custom board. I have a ROCK PI 4 SE. These boards do not come with SPI flash IC soldered on the board, but have space if one chooses to solder SPI flash himself. Since I couldn't find flash IC that Raxda recommends: https://wiki.radxa.com/Rockpi4/hardware/spi_flash (W25Q64FV; GD25Q127CSIG;XT25F32B;XT25F128B) I found equivalent to W25Q64FV. The vendor Id of FL064LIF01 is different so I'm guessing that is why it is not recognized. I read that Piter75 had support for XTX flashes at first so other flash ICs can be added maybe?
This is exactly what my goal is but since I'm new to this I though posting on forum and ask for some help would not hurt.
Thanks