Re: [PATCH 00/16] fdt: Make OF_BOARD a boolean option

[Heinrich Schuchardt]

On 10/27/21 16:55, Tom Rini wrote:
> On Wed, Oct 27, 2021 at 03:23:01PM +0200, Heinrich Schuchardt wrote:
>
> [snip]
> > One passed to U-Boot for fixups and further passed to the OS. This
> > devicetree may originate from a prior boot stage, from a file loaded by
> > U-Boot, or from a later bootstage, e.g systemd-boot's devicetree command.
>
> I assume systemd-boot is implementing the same logic that extlinux.conf
> has used for forever, yes?

It is loading the file and then calls U-Boot's implementation of the EFI 
Device Tree Fixup Protocol for fixups before passing the device-tree to 
the OS.

> > This devicetree will not contain any U-Boot specific information.
>
> To repeat, it must only have official bindings, yes, regardless of what
> project they come from.

Don't expect prior firmware stages to provide any U-Boot specific stuff 
whatever official or non-official U-Boot specific bindings exist.

Best regards

Heinrich