I'm not the pro here but as there is no override parameter for selecting the bus-width (as with the pre-Pi5 sdio overlay https://github.com/raspberrypi/linux/bl ... ADME#L4592) I would say: no, not possible. That peripheral requires 4-wire SDIO interface and can't of SPI (one-wire)So this would not be possible via SPI? The breakout board I'm currently trying to use does not support SDIO.on Pi5 the secondary SDIO is on GPIOs 22..27. You have to route this to an SD card and make Sure your cables are short. The secondary SDIO is not bootable.Code:
dtoverlay=sdio-pi5
Statistics: Posted by aBUGSworstnightmare — Mon Jul 21, 2025 12:41 pm