[PATCH 1/2] arm64: dts: orange-pi-zero-plus2: fix sdcard detect

Sergey Matyukevich
2017-11-07T20:12:45Z

Hi,

> >>> > Did you try to boot from sdcard ? I am not able to boot my board from
> >>> > sd-card without this change. As I mentioned earlier in my email
> >>> > to buildroot mailing list, with mmc debug enabled I see that mmc
> >>> > tries to init sd-card when I remove it from the slot.
> >>> >
> >>> > Maybe there is a minor differences between h/w versions or batches ?
> >>> > What is you board version ? I tested on board v1.0.
> >>>
> >>> Looking at the schematics, it definitely looks like it's active low.
> >>
> >> Is it ok to merge it then ? Or using 'cd-inverted' property
> >> is the preferable option ?
> >
> > W/o any change mainline works unstable for me, it wasn't booting
> > at-all[1] did you find the same?
> >
> > Even tried with active LOW and cd-inverted.
> >
> > [1] https://paste.ubuntu.com/25909064/
>
> Look like something broken for H5 and A64 between v4.14-rc8 to latest

Both 4.13.7 and 4.14-rc8 (synched today) kernels worked fine for me.
DTS behavior is all the same:
- default DTS: sd-card is not detected, kernel is waiting forever
- DTS with 'active low' or 'cd-inverted' fix: sd-card and boot ok

I have been using rootfs from buildroot with your zero-plus2 patches.

Regards,
Sergey