Indeed you hit the problem on the head. Apparently the same with my Rock64 problem.it has 2 sdhci controllers at d0000 and d8000 and one is sdcard and one emmc
one has a cd-gpios (the sd) and wp-inverted card-detect and write-protect inverted so it should be the sdcard, not the emmc
Well now I know what to read on..
wp-disabled
I see RK3399 has overlay in /boot/dtb/overlay/ to disable eMMC.
I might de-compile to see what it does.
SD card works during u-boot, but not after kernel starts (mmc0: error -110 whil)
SD card works during u-boot, but not after kernel starts (mmc0: error -110 whil)
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