Does the mm-iot-esp32 project support SDIO mode with ESP32? I see the standard SPI pin mappings in framework/mm_shims/Kconfig, but nothing related to 4-bit SDIO. It would be nice to take advantage of higher speeds.
We currently do not have a reference implementation on the ESP32 using SDIO but it should be possible. You would just need to implement the relevant functions in the mmhal layer to use SDIO instead of SPI.
You can refer to the HAL layer of the MM6108-EKH05-SDIO (STM32 based) for an example of how to implement it.
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