Re: [RFC PATCH 1/3] dtc: Add dtb build information option

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Hi

On 1/20/20 7:17 PM, Steve McIntyre wrote:
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@xxxxxxxxxxxxxxxxxxxxx> 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,


Thanks for reviews. I gonna prepare a V2 with David proposition (to use overlay format) by keeping in mind not to modify existing dts(i) files.

Remaining questions are:

1- "build-info" or "linux,build-info"? IMO, If information is "generic" then first one should be used.

2- Looking at Franck proposition[1] some years ago and objections on it, do you think that this one could accepted ?

regards
Alex

[1] https://lore.kernel.org/linux-arm-kernel/550A42AC.8060104@xxxxxxxxx/







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