Subject: Re: [PATCH v2 6/9] kbuild: consolidate Devicetree dtb build rules

From: Will Deacon <[email-masked]>
Date: Thu, 6 Sep 2018 11:05:47 +0100

On Wed, Sep 05, 2018 at 06:53:24PM -0500, Rob Herring wrote:
> There is nothing arch specific about building dtb files other than their
> location under /arch/*/boot/dts/. Keeping each arch aligned is a pain.
> The dependencies and supported targets are all slightly different.
> Also, a cross-compiler for each arch is needed, but really the host
> compiler preprocessor is perfectly fine for building dtbs. Move the
> build rules to a common location and remove the arch specific ones. This
> is done in a single step to avoid warnings about overriding rules.
> 
> The build dependencies had been a mixture of 'scripts' and/or 'prepare'.
> These pull in several dependencies some of which need a target compiler
> (specifically devicetable-offsets.h) and aren't needed to build dtbs.
> All that is really needed is dtc, so adjust the dependencies to only be
> dtc.
> 
> This change enables support 'dtbs_install' on some arches which were
> missing the target.
> 
> Cc: Masahiro Yamada <[email-masked]>
> Cc: Michal Marek <[email-masked]>
> Cc: Vineet Gupta <[email-masked]>
> Cc: Russell King <[email-masked]>
> Cc: Catalin Marinas <[email-masked]>
> Cc: Will Deacon <[email-masked]>
> Cc: Yoshinori Sato <[email-masked]>
> Cc: Michal Simek <[email-masked]>
> Cc: Ralf Baechle <[email-masked]>
> Cc: Paul Burton <[email-masked]>
> Cc: James Hogan <[email-masked]>
> Cc: Ley Foon Tan <[email-masked]>
> Cc: Benjamin Herrenschmidt <[email-masked]>
> Cc: Paul Mackerras <[email-masked]>
> Cc: Michael Ellerman <[email-masked]>
> Cc: Chris Zankel <[email-masked]>
> Cc: Max Filippov <[email-masked]>
> Cc: [email-masked]
> Cc: [email-masked]
> Cc: [email-masked]
> Cc: [email-masked]
> Cc: [email-masked]
> Cc: [email-masked]
> Cc: [email-masked]
> Cc: [email-masked]
> Signed-off-by: Rob Herring <[email-masked]>
> ---
> Please ack so I can take the whole series via the DT tree.

For arm64:

Acked-by: Will Deacon <[email-masked]>

Will