External dts building

[Giulio Benetti]

Hi Simon,

> Il giorno 14 ott 2021, alle ore 20:24, Simon Glass <sjg at chromium.org> ha scritto:
> 
> Hi,
> 
>> On Thu, 14 Oct 2021 at 07:46, Tom Rini <trini at konsulko.com> wrote:
>> 
>>> On Thu, Oct 14, 2021 at 02:53:30AM +0200, Giulio Benetti wrote:
>>> 
>>> Hello All,
>>> 
>>> is there a way to pass a dts file without touching the arch/arm/boot/dts/Makefile?
>>> 
>>> On Buildroot we support the possibility to pass an external dts by copying it to the uboot sources to
>>> be built but since uboot version 2020.01 it doesn’t work anymore.
>>> 
>>> So I’ve proposed a patch to prepend the dts file in the Makefile above, but this has drawbacks, like we reconfigure(it keeps adding files every time).
>>> 
>>> So I ask you, is there a more canonical way already to achieve this?
>> 
>> Not exactly, and it's something we're very much actively discussing
>> right now.
> 
> Are you using 'make DEVICE_TREE=xxx' ?

Yes but it doesn’t work if you don’t add an entry into arch/arm/dts/Makefile
Before version 2020.01 worked, but not after it.

Best regards
Giulio

> 
> Regards,
> Simon