[DEBUG] rk3399-nanopi-neo4: SPL SD init may report -5 due to SD power-on timing

[Sune Brian]

> MMC != eMMC
>
> SD Cards are MMCs, eMMCs are MMCs.

My previous mail mmc/MMC is referring to MMC slot.
Because NEO4 have a header pin slot aka MMC slot.
that can be any kind of MMC but the official module
only provide EMMC daughter card.

So there could be confusion.

The MMC slot could also run SD CARD adapter
daughter card. See [1]

[1] https://wiki.friendlyelec.com/wiki/index.php/File:NanoPi_NEO4-1808-IF-01.jpg

So what I mean is that slot is not having issue.
But SD card slot is having issue.
It is a bit hard to describe.

Brian