Re: RockPro64 with latest image fails to boot?

Hi Søren!

Here is a custom u-boot-2020.07 port that allows you to get eDP video on
the Pinebook-Pro.
https://github.com/S199pWa1k9r/ports/tree/master/sysutils/u-boot-pinebook-pro
A kernel patch is also needed ...
http://dev.kubsu.ru/images/PineBook-Pro/


чт, 6 авг. 2020 г. в 14:51, Emmanuel Vadot <[email protected]>:

> On Thu, 6 Aug 2020 13:46:16 +0200
> Søren Schmidt <[email protected]> wrote:
>
> >
> >
> > > On 6 Aug 2020, at 12.13, Emmanuel Vadot <[email protected]> wrote:
> > >
> > > On Sun, 2 Aug 2020 11:30:00 +0200
> > > Søren Schmidt <[email protected] <mailto:[email protected]>>
> wrote:
> > >
> > >>
> > >>
> > >>> On 1 Aug 2020, at 23.55, Bjoern A. Zeeb <
> [email protected]> wrote:
> > >>>
> > >>>
> > >>> In case you would be willing to try building a kernel yourself, try
> something with a lot of non-essential modules (e.g. the allwinner modules)
> removed and see what happens (just trying to make the size of the kernel
> smaller).
> > >>
> > >> Thats where I startet to see the problem, with my own minimal kernel
> config, to make certain I hadn?t goofed it up I tried the latest stock
> image.
> > >>
> > >> I have tried different SD cards and PSU's to rule those out (and yes
> it boots every time on a NetBSD image).
> > >>
> > >> However from 20+ boots I can say that it dies in different places but
> close to the original post here. BUT it did manage to boot once (without
> HDMI).
> > >> As the HW boots my older custom kernel just fine (and the other
> BSD?s) I don?t think its a HW problem, but more likely a race of sorts
> since it did boot once.
> > >>
> > >> The same issue is with my pinebookpro, it behaves exactly the same,
> but no output on the display at all, just console..
> > >
> > > There is no support for eDP in mainline u-boot.
> > > Some patches are around to add support but I don't think that they
> > > have been submitted upstream.
> > > There is another issue with eDP and FreeBSD kernel, u-boot set the
> > > CPLL to 600Mhz (iirc) but the DTS have it set to 800Mhz so when we
> > > process the assigned-clocks property and set it to 800Mhz the eDP
> > > clock (which is derived from CPLL) isn't correct anymore and we lose
> > > the display.
> >
> > OK, I?ll look around a bit and see what gives.?
> >
> > >
> > >> I?ll try to backstep -current to where it did work and se it that
> brings any light over the issue?
> > >
> > > Did you find anything ?
> >
> > Yeah VirtualBox managed to crash my Mac into oblivion, so I?m just about
> finished getting things back together again (timemachine is nice :) )
> >
> > However, it also fails with my previously good -current release, so that
> points pretty squarely at u-boot 2020.07. I?ll try to go back to 2020.04
> (plus patches to find 4G etc).
>
>  What patches are you talking about ?
>
> > --Søren
> >
> > [email protected] / [email protected]
> > "So much code to hack, so little time"
> >
>
>
> --
> Emmanuel Vadot <[email protected]>
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