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Date:      Thu, 6 Aug 2020 12:13:14 +0200
From:      Emmanuel Vadot <manu@bidouilliste.com>
To:        =?ISO-8859-1?Q?S=F8ren?= Schmidt <soren.schmidt@gmail.com>
Cc:        "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>, freebsd-arm <freebsd-arm@freebsd.org>
Subject:   Re: RockPro64 with latest image fails to boot?
Message-ID:  <20200806121314.7b877e777f518db36c69f8a4@bidouilliste.com>
In-Reply-To: <3D9B8A33-D537-4B21-B0BD-5E550A2294D7@gmail.com>
References:  <C063D3D8-07AE-4A0A-9A75-A42C7DAA6F36@gmail.com> <20200801185716.a1c5a2972fdcf3a05902f256@bidouilliste.com> <010E3738-FB70-4A58-82A6-391252EB7A4B@gmail.com> <F4716F7B-E445-45FD-8B16-79B994A84BB9@lists.zabbadoz.net> <3D9B8A33-D537-4B21-B0BD-5E550A2294D7@gmail.com>

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On Sun, 2 Aug 2020 11:30:00 +0200
S=F8ren Schmidt <soren.schmidt@gmail.com> wrote:

>=20
>=20
> > On 1 Aug 2020, at 23.55, Bjoern A. Zeeb <bzeeb-lists@lists.zabbadoz.net=
> wrote:
> >=20
> >=20
> > In case you would be willing to try building a kernel yourself, try som=
ething with a lot of non-essential modules (e.g. the allwinner modules) rem=
oved and see what happens (just trying to make the size of the kernel small=
er).
>=20
> Thats where I startet to see the problem, with my own minimal kernel conf=
ig, to make certain I hadn?t goofed it up I tried the latest stock image.
>=20
> I have tried different SD cards and PSU's to rule those out (and yes it b=
oots every time on a NetBSD image).
>=20
> However from 20+ boots I can say that it dies in different places but clo=
se 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.
>=20
> The same issue is with my pinebookpro, it behaves exactly the same, but n=
o 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 ?

> -S=F8ren
>=20


--=20
Emmanuel Vadot <manu@bidouilliste.com> <manu@freebsd.org>



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