What are the required options in the linux kernel for emmc support ? I already included "MMC/SD/SDIO card support" but it doesn't seem to be sufficient.
Have not gotten mine yet to poke around, but could the problem lie with the device tree, and not the kernel per se?
Here is my current kernel config for gentoo linux : https://pastebin.com/XyNFzhta It seems to be working fine, i think i was missing CONFIG_X86_INTEL_LPSS (and CONFIG_PINCTRL_CHERRYVIEW ?) for the onboard mmc support
Yes it was not intuitive. Udoo should have provided a minimal working kernel config for their board, like other board makers do.