> -----Original Message----- > From: Ulf Hansson [mailto:[email protected]] > Sent: Friday, January 13, 2017 7:23 PM > To: Bough Chen <[email protected]> > Cc: Shawn Lin <[email protected]>; Clemens Gruber > <[email protected]>; [email protected]; Linus Walleij > <[email protected]>; Adrian Hunter <[email protected]>; A.S. > Dong <[email protected]>; [email protected]; Gary Bisson > <[email protected]>; Fabio Estevam <[email protected]>; > Shawn Guo <[email protected]> > Subject: Re: eMMC boot problem: switch to bus width 8 ddr failed > > [...] > > > 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?
Seems Yes, I will test the patch when you post. Best Regards, Haibo Chen > > [...] > > Kind regards > Uffe
