Converting to DM SERIAL for Kirkwood boards

[Tony Dinh]

Hi Stefan,

On Sun, Dec 18, 2022 at 11:29 PM Stefan Roese <sr at denx.de> wrote:
>
> Hi Tony,
>
> On 12/19/22 07:17, Stefan Roese wrote:
>
> <snip>
>
> >> git checkout 37bb396669b27aa62fe8bc5eeb6bfde92e09c2d3
> >> Previous HEAD position was 3b44b3fdf2 arm: mvebu: Add support for
> >> programming LD0 and LD1 eFuse
> >> HEAD is now at 37bb396669 timer: orion-timer: Only init timer once
> >>
> >> This is where the Pogo V4 was frozen during boot. Among the Kirkwood
> >> boards that I have and used for testing, it is the only one that has
> >> CONFIG_BOOTSTAGE=y.
> >
> > Thanks for testing and git bi-secting.
> >
> >> Should I create a new post for would like to continue this topic here
> >> in this thread?
> >
> > Let me check, if I can find the root cause and this problem quickly. If
> > not, then we should probably disable CONFIG_BOOTSTAGE on the Pogo v4 for
> > a short while until we've fixed this issue.
>
> I fail to spot the problem with this small commit 37bb396669b27a. I can
> also not reproduce this on my Armada XP board - it uses SPL though, this
> might make a difference.
>
> Could you perhaps apply this attached debug patch and make sure, that
> you have DEBUG_UART enabled in your Pogo v4 config. And boot into the
> resulting image.

Here is the kwboot log with DEBUG_UART. Note that number 322322 below
is part of the log.

322322

U-Boot 2023.01-rc3-00057-g9bd3d354a1-dirty (Dec 19 2022 - 01:29:21 -0800)
Pogoplug V4

SoC:   Kirkwood 88F6281_A1
Model: Cloud Engines PogoPlug Series 4
DRAM:  128 MiB
322322322Core:  19 devices, 15 uclasses, devicetree: separate
NAND:  4


Thanks,
Tony

> Thanks,
> Stefan