mmc1 timeout issue with rpi3

[Stefan Wahren]

Hi Sergey,

> Sergey Suloev <ssuloev at orpaltech.com> hat am 17. Januar 2018 um 21:04 geschrieben:
> 
> 
> Hi Stefan,
> 
> On 01/17/2018 10:32 PM, Stefan Wahren wrote:
> > Hi Sergey,
> >
> >> Sergey Suloev <ssuloev at orpaltech.com> hat am 17. Januar 2018 um 19:49 geschrieben:
> >>
> >>
> >> Hi Stefan
> >>
> >> wifi network was working fine when I used a raspbian image downloaded
> >> from official site.
> >>
> >> Here is my config https://pastebin.com/7XRpmM0X  and cpuinfo
> >> https://pastebin.com/08Z6gDZ9
> >>
> >> I have no idea about version you are talking about.
> > please stop top-posting.
> >
> > I was talking about the board revision of your RPi. You can get this information by looking at the PCB.
> >
> > I updated to the last firmware and your config but i'm unable to reproduce this issue.
> >
> > Do you use U-Boot or only the Raspberry Pi bootloader?
> > What are your modifications to config.txt?
> >
> >> Thanks.
> >>
> >>
> I am using u-boot tagged 2018.01.

interesting. I don't use u-boot as second stage bootloader. Maybe it messed up the pin configuration of the GPIO expander. Could you please try without u-boot?