From mboxrd@z Thu Jan  1 00:00:00 1970
From: Steve McIntyre <steve.mcintyre-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Subject: Re: [RFC PATCH 1/3] dtc: Add dtb build information option
Date: Mon, 20 Jan 2020 18:17:14 +0000
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To: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: David Gibson <david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>, Alexandre Torgue <alexandre.torgue-qxv4g6HH51o@public.gmane.org>, Frank Rowand <frowand.list-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Masahiro Yamada <masahiroy-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Michal Marek <michal.lkml-yyZNWGI4GtDR7s880joybQ@public.gmane.org>, Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Linux Kbuild mailing list <linux-kbuild-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Devicetree Compiler <devicetree-compiler-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>

On Fri, Jan 17, 2020 at 08:43:23AM -0600, Rob Herring wrote:
>On Fri, Jan 17, 2020 at 6:26 AM David Gibson
><david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org> wrote:

...

>> What might be better would be to have a dtc option which force appends
>> an extra .dts to the mail .dts compiled.  You can then put an overlay
>> template in that file, something like:
>>
>> &{/} {
>>         linux,build-info = /incbin/ "build-info.txt;
>> }
>
>I like this suggestion either as an include another dts file or an
>overlay. The latter could be useful as a way to maintain current dtb
>files while splitting the source files into base and overlay dts
>files.

ACK, that sounds like it could be helpful.

>But no, let's not prepend this with 'linux'. It's not a property
>specific for Linux to consume.

Right. We might be seeing the data coming through from U-Boot (or any
other random bootloader) too.

Cheers,
-- 
Steve McIntyre                                steve.mcintyre-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
<http://www.linaro.org/> Linaro.org | Open source software for ARM SoCs