devicetree: Move include prefixes from arch to separate directory

2017-05-19T06:55:48Z

We use a directory under arch/$ARCH/boot/dts as an include path that has links outside of the subtree to find dt-bindings from under include/dt-bindings. That's been working well, but new DT architectures haven't been adding them by default. Recently there's been a desire to share some of the DT material between arm and arm64, which originally caused developers to create symlinks or relative includes between the subtrees. This isn't ideal -- it breaks if the DT files aren't stored in the exact same hierarchy as the kernel tree, and generally it's just icky. As a somewhat cleaner solution we decided to add a $ARCH/ prefix link once, and allow DTS files to reference dtsi (and dts) files in other architectures that way. Original approach was to create these links under each architecture, but it lead to the problem of recursive symlinks. As a remedy, move the include link directories out of the architecture trees into a common location. At the same time, they can now share one directory and one dt-bindings/ link as well. Fixes: 4027494ae6e3 ('ARM: dts: add arm/arm64 include symlinks') Reported-by: Russell King Reported-by: Omar Sandoval Reviewed-by: Heiko Stuebner Reviewed-by: Masahiro Yamada Tested-by: Heiko Stuebner Acked-by: Rob Herring Cc: Heiko Stuebner Cc: Mark Rutland Cc: Russell King Cc: Catalin Marinas Cc: Will Deacon Cc: Mikael Starvik Cc: Jesper Nilsson Cc: James Hogan Cc: Ralf Baechle Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Frank Rowand Cc: linux-arch Signed-off-by: Olof Johansson

arm64: dts: add arm/arm64 include symlinks

2017-03-22T00:21:28Z

Allow including of dtsi files in an architecture-independent manner. Some dtsi files may be shared between architectures and one suggestion was to have symlinks and let these includes get accessed via a #include So add the necessary symlinks for arm32. Suggested-by: Olof Johansson Signed-off-by: Heiko Stuebner Signed-off-by: Olof Johansson

arm64: Create link to include/dt-bindings to enable C preprocessor use.

2014-11-20T16:51:09Z

DT files used in the compilation phase can be preprocessed by the C preprocessor. This requires an include/dt-bindings directory to be present in the arch/arm64/boot/dts directory. Signed-off-by: Liviu Dudau Signed-off-by: Arnd Bergmann

linux/arch/arm64/boot/dts/include, branch master

devicetree: Move include prefixes from arch to separate directory

arm64: dts: add arm/arm64 include symlinks

arm64: Create link to include/dt-bindings to enable C preprocessor use.