Re: [PATCH 2/6] kbuild: add dtc as dependency on .dtb files

[Rob Herring]

On Wed, Feb 28, 2018 at 11:45 PM, Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:
> 2018-03-01 13:33 GMT+09:00 Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>:
>> 2018-03-01 8:32 GMT+09:00 Rob Herring <robh@xxxxxxxxxx>:
>>> If dtc is rebuilt, we should rebuild .dtb files with the new dtc.
>>>
>>> Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
>>> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
>>
>>
>> Hmm, I am not 100% sure about this.
>>
>> Is there a case where resulted DTBs
>> depend on DTC version?
>>
>>
>> If I understand correctly,
>> DTS and DTB are 1:1
>> Unlike CC, there is no room for optimization.
>
>
> Maybe I was wrong.
>
> Is there room for optimization
> in 'DT strings' section?

Not sure.

> I guess it is optimized enough to avoid string duplication,
> but there could be different results
> without changing the specification.

What I care about is rebuilding so new warnings get emitted especially
when developing those checks. Right now I have to manually delete the
dtb files each time.

Rob