Re: [PATCH] kbuild: Allow DTB overlays to built from .dtso named source files

[Andrew Davis]

On 10/21/22 1:52 AM, Geert Uytterhoeven wrote:
> Hi Rob,
>
> On Fri, Oct 21, 2022 at 12:47 AM Rob Herring <robh+dt@xxxxxxxxxx> wrote:
> > On Fri, Oct 14, 2022 at 10:13 AM Andrew Davis <afd@xxxxxx> wrote:
> > > Currently DTB Overlays (.dtbo) are build from source files with the same
> > > extension (.dts) as the base DTs (.dtb). This may become confusing and
> > > even lead to wrong results. For example, a composite DTB (created from a
> > > base DTB and a set of overlays) might have the same name as one of the
> > > overlays that create it.
> > >
> > > Different files should be generated from differently named sources.
> > >   .dtb  <-> .dts
> > >   .dtbo <-> .dtso
> > >
> > > We do not remove the ability to compile DTBO files from .dts files here,
> > > only add a new rule allowing the .dtso file name. The current .dts named
> > > overlays can be renamed with time. After all have been renamed we can
> > > remove the other rule.
> >
> > There was a patch from Geert converting everything. I'd rather not
> > support both ways.
>
> Actually that was a patch from Frank?

That series looks to have stalled?

It won't be easy to convert all the files in one go, especially with series
in-flight with both names, not sure how we avoid having both extensions for
at least one cycle. Plus having both allowed lets rename the existing files
in a more granular/bisectable way.

Thanks,
Andrew