devicetree: Move include prefixes from arch to separate directory

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 <linux@armlinux.org.uk>
Reported-by: Omar Sandoval <osandov@osandov.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: linux-arch <linux-arch@vger.kernel.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

diff --git a/arch/arm/boot/dts/include/arm b/arch/arm/boot/dts/include/arm
deleted file mode 120000 (symlink)
index a96aa0e..0000000
--- a/arch/arm/boot/dts/include/arm
+++ /dev/null
@@ -1 +0,0 @@
-..
\ No newline at end of file

diff --git a/arch/arm/boot/dts/include/arm64 b/arch/arm/boot/dts/include/arm64
deleted file mode 120000 (symlink)
index 074a835..0000000
--- a/arch/arm/boot/dts/include/arm64
+++ /dev/null
@@ -1 +0,0 @@
-../../../../arm64/boot/dts
\ No newline at end of file

diff --git a/arch/arm/boot/dts/include/dt-bindings b/arch/arm/boot/dts/include/dt-bindings
deleted file mode 120000 (symlink)
index 08c00e4..0000000
--- a/arch/arm/boot/dts/include/dt-bindings
+++ /dev/null
@@ -1 +0,0 @@
-../../../../../include/dt-bindings
\ No newline at end of file

diff --git a/arch/arm64/boot/dts/include/arm b/arch/arm64/boot/dts/include/arm
deleted file mode 120000 (symlink)
index cf63d80..0000000
--- a/arch/arm64/boot/dts/include/arm
+++ /dev/null
@@ -1 +0,0 @@
-../../../../arm/boot/dts
\ No newline at end of file

diff --git a/arch/arm64/boot/dts/include/arm64 b/arch/arm64/boot/dts/include/arm64
deleted file mode 120000 (symlink)
index a96aa0e..0000000
--- a/arch/arm64/boot/dts/include/arm64
+++ /dev/null
@@ -1 +0,0 @@
-..
\ No newline at end of file

diff --git a/arch/arm64/boot/dts/include/dt-bindings b/arch/arm64/boot/dts/include/dt-bindings
deleted file mode 120000 (symlink)
index 08c00e4..0000000
--- a/arch/arm64/boot/dts/include/dt-bindings
+++ /dev/null
@@ -1 +0,0 @@
-../../../../../include/dt-bindings
\ No newline at end of file

diff --git a/arch/cris/boot/dts/include/dt-bindings b/arch/cris/boot/dts/include/dt-bindings
deleted file mode 120000 (symlink)
index 08c00e4..0000000
--- a/arch/cris/boot/dts/include/dt-bindings
+++ /dev/null
@@ -1 +0,0 @@
-../../../../../include/dt-bindings
\ No newline at end of file

diff --git a/arch/metag/boot/dts/include/dt-bindings b/arch/metag/boot/dts/include/dt-bindings
deleted file mode 120000 (symlink)
index 08c00e4..0000000
--- a/arch/metag/boot/dts/include/dt-bindings
+++ /dev/null
@@ -1 +0,0 @@
-../../../../../include/dt-bindings
\ No newline at end of file

diff --git a/arch/mips/boot/dts/include/dt-bindings b/arch/mips/boot/dts/include/dt-bindings
deleted file mode 120000 (symlink)
index 08c00e4..0000000
--- a/arch/mips/boot/dts/include/dt-bindings
+++ /dev/null
@@ -1 +0,0 @@
-../../../../../include/dt-bindings
\ No newline at end of file

diff --git a/arch/powerpc/boot/dts/include/dt-bindings b/arch/powerpc/boot/dts/include/dt-bindings
deleted file mode 120000 (symlink)
index 08c00e4..0000000
--- a/arch/powerpc/boot/dts/include/dt-bindings
+++ /dev/null
@@ -1 +0,0 @@
-../../../../../include/dt-bindings
\ No newline at end of file

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 6dc1eda13b8e841d8cdbdd2b0ec664df84607801..58c05e5d9870b6c18a72da7dc44ff3112994946d 100644 (file)
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -175,7 +175,7 @@ ld_flags       = $(LDFLAGS) $(ldflags-y)
 
 dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
                 -I$(srctree)/arch/$(SRCARCH)/boot/dts                   \
-                -I$(srctree)/arch/$(SRCARCH)/boot/dts/include           \
+                -I$(srctree)/scripts/dtc/include-prefixes               \
                 -I$(srctree)/drivers/of/testcase-data                   \
                 -undef -D__DTS__
 

diff --git a/scripts/dtc/include-prefixes/arc b/scripts/dtc/include-prefixes/arc
new file mode 120000 (symlink)
index 0000000..5d21b5a
--- /dev/null
+++ b/scripts/dtc/include-prefixes/arc
@@ -0,0 +1 @@
+../../../arch/arc/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/arm b/scripts/dtc/include-prefixes/arm
new file mode 120000 (symlink)
index 0000000..eb14d45
--- /dev/null
+++ b/scripts/dtc/include-prefixes/arm
@@ -0,0 +1 @@
+../../../arch/arm/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/arm64 b/scripts/dtc/include-prefixes/arm64
new file mode 120000 (symlink)
index 0000000..275c42c
--- /dev/null
+++ b/scripts/dtc/include-prefixes/arm64
@@ -0,0 +1 @@
+../../../arch/arm64/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/c6x b/scripts/dtc/include-prefixes/c6x
new file mode 120000 (symlink)
index 0000000..49ded4c
--- /dev/null
+++ b/scripts/dtc/include-prefixes/c6x
@@ -0,0 +1 @@
+../../../arch/c6x/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/cris b/scripts/dtc/include-prefixes/cris
new file mode 120000 (symlink)
index 0000000..736d998
--- /dev/null
+++ b/scripts/dtc/include-prefixes/cris
@@ -0,0 +1 @@
+../../../arch/cris/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/dt-bindings b/scripts/dtc/include-prefixes/dt-bindings
new file mode 120000 (symlink)
index 0000000..04fdbb3
--- /dev/null
+++ b/scripts/dtc/include-prefixes/dt-bindings
@@ -0,0 +1 @@
+../../../include/dt-bindings
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/h8300 b/scripts/dtc/include-prefixes/h8300
new file mode 120000 (symlink)
index 0000000..3bdaa33
--- /dev/null
+++ b/scripts/dtc/include-prefixes/h8300
@@ -0,0 +1 @@
+../../../arch/h8300/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/metag b/scripts/dtc/include-prefixes/metag
new file mode 120000 (symlink)
index 0000000..87a3c84
--- /dev/null
+++ b/scripts/dtc/include-prefixes/metag
@@ -0,0 +1 @@
+../../../arch/metag/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/microblaze b/scripts/dtc/include-prefixes/microblaze
new file mode 120000 (symlink)
index 0000000..d983033
--- /dev/null
+++ b/scripts/dtc/include-prefixes/microblaze
@@ -0,0 +1 @@
+../../../arch/microblaze/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/mips b/scripts/dtc/include-prefixes/mips
new file mode 120000 (symlink)
index 0000000..ae8d494
--- /dev/null
+++ b/scripts/dtc/include-prefixes/mips
@@ -0,0 +1 @@
+../../../arch/mips/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/nios2 b/scripts/dtc/include-prefixes/nios2
new file mode 120000 (symlink)
index 0000000..5177233
--- /dev/null
+++ b/scripts/dtc/include-prefixes/nios2
@@ -0,0 +1 @@
+../../../arch/nios2/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/openrisc b/scripts/dtc/include-prefixes/openrisc
new file mode 120000 (symlink)
index 0000000..71c3bc7
--- /dev/null
+++ b/scripts/dtc/include-prefixes/openrisc
@@ -0,0 +1 @@
+../../../arch/openrisc/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/powerpc b/scripts/dtc/include-prefixes/powerpc
new file mode 120000 (symlink)
index 0000000..7cd6ec1
--- /dev/null
+++ b/scripts/dtc/include-prefixes/powerpc
@@ -0,0 +1 @@
+../../../arch/powerpc/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/sh b/scripts/dtc/include-prefixes/sh
new file mode 120000 (symlink)
index 0000000..67d3780
--- /dev/null
+++ b/scripts/dtc/include-prefixes/sh
@@ -0,0 +1 @@
+../../../arch/sh/boot/dts
\ No newline at end of file

diff --git a/scripts/dtc/include-prefixes/xtensa b/scripts/dtc/include-prefixes/xtensa
new file mode 120000 (symlink)
index 0000000..d1eaf6e
--- /dev/null
+++ b/scripts/dtc/include-prefixes/xtensa
@@ -0,0 +1 @@
+../../../arch/xtensa/boot/dts
\ No newline at end of file