linux-kernel - Re: [PATCH v2 6/9] kbuild: consolidate Devicetree dtb build rules

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Date:   Fri, 07 Sep 2018 10:08:19 +0800
From:   Ley Foon Tan <ley.foon.tan@...el.com>
To:     Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Michal Marek <michal.lkml@...kovi.net>,
        Vineet Gupta <vgupta@...opsys.com>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Michal Simek <monstr@...str.eu>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        Ley Foon Tan <lftan@...era.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Chris Zankel <chris@...kel.net>,
        Max Filippov <jcmvbkbc@...il.com>,
        linux-kbuild@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        uclinux-h8-devel@...ts.sourceforge.jp, linux-mips@...ux-mips.org,
        nios2-dev@...ts.rocketboards.org, linuxppc-dev@...ts.ozlabs.org,
        linux-xtensa@...ux-xtensa.org
Subject: Re: [PATCH v2 6/9] kbuild: consolidate Devicetree dtb build rules

On Wed, 2018-09-05 at 18:53 -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 <yamada.masahiro@...ionext.com>
> Cc: Michal Marek <michal.lkml@...kovi.net>
> Cc: Vineet Gupta <vgupta@...opsys.com>
> Cc: Russell King <linux@...linux.org.uk>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> Cc: Michal Simek <monstr@...str.eu>
> Cc: Ralf Baechle <ralf@...ux-mips.org>
> Cc: Paul Burton <paul.burton@...s.com>
> Cc: James Hogan <jhogan@...nel.org>
> Cc: Ley Foon Tan <lftan@...era.com>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Chris Zankel <chris@...kel.net>
> Cc: Max Filippov <jcmvbkbc@...il.com>
> Cc: linux-kbuild@...r.kernel.org
> Cc: linux-snps-arc@...ts.infradead.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: uclinux-h8-devel@...ts.sourceforge.jp
> Cc: linux-mips@...ux-mips.org
> Cc: nios2-dev@...ts.rocketboards.org
> Cc: linuxppc-dev@...ts.ozlabs.org
> Cc: linux-xtensa@...ux-xtensa.org
> Signed-off-by: Rob Herring <robh@...nel.org>
> ---
> Please ack so I can take the whole series via the DT tree.
> 
For nios2:

Acked-by: Ley Foon Tan <ley.foon.tan@...el.com>


Regards
Ley Foon