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[PATCH v2 01/13] of: add config option to enable building of all dtbs

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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.

In order to only build dtbs, this option can be used by creating an
allno.config file containing:
CONFIG_COMPILE_TEST=y
CONFIG_OF=y
CONFIG_OF_ALL_DTBS=y

And then running:
make KCONFIG_ALLCONFIG=1 allnoconfig
make dtbs

While building the dtbs themselves don't need a cross compiler, the
scripts dependency does need one. This can be hacked around by
commenting out "subdir-y += mod" in scripts/Makefile.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Grant Likely <grant.likely@linaro.org>
---
 drivers/of/Kconfig | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 59bb855..e2a4841 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -23,6 +23,16 @@ config OF_UNITTEST
 
 	  If unsure, say N here, but this option is safe to enable.
 
+config OF_ALL_DTBS
+	bool "Build all Device Tree Blobs"
+	depends on COMPILE_TEST
+	select DTC
+	help
+	  This option builds all possible Device Tree Blobs (DTBs) for the
+	  current architecture.
+
+	  If unsure, say N here, but this option is safe to enable.
+
 config OF_FLATTREE
 	bool
 	select DTC
-- 
2.1.4

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[PATCH v2 00/13] Enable building all dtb files Rob Herring <robh@kernel.org> - 2015-10-08 20:00 +0200
  [PATCH v2 09/13] mips: enable building of all dtbs Rob Herring <robh@kernel.org> - 2015-10-08 20:00 +0200
  [PATCH v2 05/13] arm64: enable building of all dtbs Rob Herring <robh@kernel.org> - 2015-10-08 20:00 +0200
    Re: [PATCH v2 05/13] arm64: enable building of all dtbs Geert Uytterhoeven <geert@linux-m68k.org> - 2015-10-08 20:20 +0200
      Re: [PATCH v2 05/13] arm64: enable building of all dtbs Rob Herring <robh@kernel.org> - 2015-10-08 21:00 +0200
  [PATCH v2 13/13] xtensa: enable building of all dtbs Rob Herring <robh@kernel.org> - 2015-10-08 20:00 +0200
  [PATCH v2 01/13] of: add config option to enable building of all dtbs Rob Herring <robh@kernel.org> - 2015-10-08 20:00 +0200
  [PATCH v2 02/13] arc: use common make variables for dtb builds Rob Herring <robh@kernel.org> - 2015-10-08 20:00 +0200
  [PATCH v2 06/13] h8300: enable building of all dtbs Rob Herring <robh@kernel.org> - 2015-10-08 20:00 +0200
  [PATCH v2 07/13] metag: use common make variables for dtb builds Rob Herring <robh@kernel.org> - 2015-10-08 20:00 +0200
  [PATCH v2 08/13] metag: enable building of all dtbs Rob Herring <robh@kernel.org> - 2015-10-08 20:00 +0200
  [PATCH v2 12/13] powerpc: enable building of all dtbs Rob Herring <robh@kernel.org> - 2015-10-08 20:00 +0200
    Re: [PATCH v2 12/13] powerpc: enable building of all dtbs Michael Ellerman <mpe@ellerman.id.au> - 2015-10-12 12:30 +0200
      Re: [PATCH v2 12/13] powerpc: enable building of all dtbs Rob Herring <robh@kernel.org> - 2015-10-13 17:30 +0200

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