Re: [PATCH 1/2] libfdt: overlay: Allow resolving phandle symbols

[Geert Uytterhoeven <geert@linux-m68k.org>]

On Wed, Sep 25, 2024 at 9:28 AM David Gibson
<david@gibson.dropbear.id.au> wrote:
> On Tue, Sep 24, 2024 at 12:11:36PM +0530, Ayush Singh wrote:
> > On 9/23/24 09:11, David Gibson wrote:
> > > The old "connector binding" proposals I was describing aimed to
> > > decouple the type of the connector from the instance of the connector
> > > for exactly this sort of case.
> >
> > Do you have a link to the "connector binding" proposal you are mentioning
> > here? I really believe having a better way to support such connectors is
> > really important for embedded systems. And I am okay with adding any missing
> > bits to make it a reality.
> >
> > With `PREEMPT_RT` patches being merged, it is probably a good time to
> > improve embedded linux.
>
> I don't think there was ever a proposal written up as such.  It was
> just an idea floating around the mailing lists.  I did manage to dig
> up what were meant to be some illustrative examples of the idea.
> Alas, without any explanatory notes.  It was last modified in 2016,
> but let's see what I can remember in terms of context.  Note that all
> of the below was a quick draft - it would certainly need polish and
> all syntax is negotiable.  In particular the use of the /plugin/
> keyword might not be compatible with its current use for overlays, so
> that would probably need changing.
>
>
> The idea is that a base board could define specific "connectors",
> which could describe what buses / pins / interrupts / whatever were
> exposed on that connector.  Each connector instance had some local
> aliases referencing the nodes in the base board the connector could
> alter.

Several people are working on things related to this.
Please have a look at https://lpc.events/event/18/contributions/1696/.
I don't know the video is online yet.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds