linux-kernel - Re: [PATCH v2 05/13] arm64: enable building of all dtbs

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Message-ID: <CAL_JsqLrRc==SPbs6a1irkGA0rFYdJfUg-wWV8yq7MjGtRC58g@mail.gmail.com>
Date:	Thu, 8 Oct 2015 13:54:05 -0500
From:	Rob Herring <robh@...nel.org>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Frank Rowand <frowand.list@...il.com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Olof Johansson <olof@...om.net>,
	"arm@...nel.org" <arm@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 05/13] arm64: enable building of all dtbs

On Thu, Oct 8, 2015 at 1:15 PM, Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> On Thu, Oct 8, 2015 at 7:53 PM, Rob Herring <robh@...nel.org> wrote:
>> Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs
>> are not really dependent on a platform being enabled or any other kernel
>> config, so for testing coverage it is convenient to build all of the dtbs.
>> This builds all dts files in the tree, not just targets listed. This
>> is simpler for arm64 which has a bunch of sub-dirs.
>
> This doesn't look simpler than the arm(32) version?

I discussed this with Olof in the last version. In the ARM version, I
could have done just one line "dtb-$(CONFIG_OF_ALL_DTBS) += $(dtb-)"
to add all the disabled dtbs. On arm64, I would have to do that for
each sub-dir Makefile as well as make sure any new sub-dirs have this
line. In the end, I also prefer to build everything in the tree and
not rely on the dtbs to be explicitly listed.

Rob
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