Re: eMMC boot problem: switch to bus width 8 ddr failed

[Ulf Hansson]

[...]

> Hi Ulf and Shawn,
>
> Aisheng and I debug this issue these days, and we find the root cause. There are two things
> to describe.
>
> 1) voltage switch issue.  The properity "no-1-8-v" do not work for  MMC_TIMING_MMC_DDR52.
> This is another bug, we need to fix, but has no relation with the current bug.

I am working on a patch which invents MMC_CAP_3_3V_DDR and which has a
corresponding DT binding "mmc-ddr-3_3v".
Give me a day or so, then I will post it.

Likely it should help to resolve your issue, don't you think?

[...]

Kind regards
Uffe