Re: Rock64 vs. USB3 for 14.0-ALPHA2 's Rock64 snapshot vs. device tree update(?)

Hi,

On Sun, Aug 20, 2023 at 10:08 PM Mark Millard <[email protected]> wrote:

> On Aug 20, 2023, at 11:08, Guy Yur <[email protected]> wrote:
>
> ... (snip)
> >
> > I boot from sdcard with msdosfs partition with EFI/BOOT/bootaa64.efi and
> the dtb in rockchip/ dir in the partition.
> > I tested renaming the rockchip dir so the dtb won't be found and there
> was still a device tree provided.
> > seen in devinfo and ofwdump.
>
> Back when I established my structure (long ago) this provided
> U-Boot's translation of its *.dtb --which did not work for
> FreeBSD purposes at the time. FreeBSD's Rock64 related updates
> have been based on tracking upstream linux at some point.
> Doing what I did got the FreeBSD *.dtb that FreeBSD expected
> (at the time. anyway).
>
>
Updating with more correct information for future reference since
from my previous post it sounds like u-boot behavior changed when
it has not in regards to placing the fdt file in the EFI partition.

The real issue is a bug in u-boot 2023.07.02 failing to read the fdt from
the EFI partition
and the u-boot provided fdt bindings for Rock64 containing wrong xhci
definition.

Reading fdt file was fixed in:
https://source.denx.de/u-boot/u-boot/-/commit/2984d21a28f812c9c1fd2243cc72796f69a61585

I believe all issues should be resolved in the next u-boot release.

... (snip)
>
> I do not know if the Rock64 related support will continue to
> be updated to track the linux upstream updates or not. (If not,
> then likely snapshots and releases for Rock64 would stop.)
>
> As stands I do not plan on going down a path that might not
> be what FreeBSD ends up with for Rock64 related support if
> it is updated. For now, I've just put the Rock64 to the side.
> But I'm keeping copies of your notes.
>
>
I think the current fdt that comes with 14.0 works fine for USB3,
so at least for now a modern device tree should work.

... (snip)
>
> ===
> Mark Millard
> marklmi at yahoo.com
>
>
===
Guy Yur