I tried to maintain the SPI mode because it is useful in tiny embedded devices, and thought it would be helpful for the AVR MCUs. As AVR was blocked, I thought it was wise to deprecate the SPI mode as users are interested in the faster MMC mode. Today Thomas surprised me by posting an update of it! https://www.mail-archive.com/qemu-devel@nongnu.org/msg720089.html
I'm still posting this as RFC to discuss, but I'm reconsiderating keeping this mode a bit more. Philippe Mathieu-Daudé (2): hw/sd/ssi-sd: Deprecate the SPI to SD card 'adapter' hw/sd/sdcard: Deprecate the SPI mode docs/system/deprecated.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) -- 2.21.3