Re: RockPro64 with latest image fails to boot?

On Sun, 2 Aug 2020 11:30:00 +0200
Søren Schmidt <[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.

> 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 ?

> -Søren
> 


-- 
Emmanuel Vadot <[email protected]> <[email protected]>
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