We are using 3 separate MT7697 modules in SPI bus as a slave devices. We are not sure if it is a software issue, but the MT7697 modules pull the MISO line low right after they are released from reset. ChipSelect line can be low or high, it doesn't matter. Is this known issue or could it be the software we have in MT7697? If we have only one module active, they work like they are designed, so the SPI communication does work. I haven't done the code myself, but as far as I understand MT7697 uses hardware SPI for slave communication and should handle the MISO line release automatically? We are using GPIO's 29...32.