FYI...this issue affects only specific eMMC-Chips (vendor SEC) on the Bananapi-R2 (v1.2).
i have a v1.1 with a Samsung eMMC where i had no problems with the missing pullups/pulldowns (maybe this has internal resistors) more information about this special case: https://forum.banana-pi.org/t/problem-trying-to-use-emmc/11253 tested the patch on my device for regressions...no problems Tested-By: Frank Wunderlich <fran...@public-files.de>