| Message ID | 1437993343-9542-1-git-send-email-ian.campbell@citrix.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi, On Mon, Jul 27, 2015 at 11:35:43AM +0100, Ian Campbell wrote: > Commit 9ccd608070b6 "arm64: dts: add device tree for ARM SMM-A53x2 on > LogicTile Express 20MG" added a new dts file to arch/arm64 which > included "../../../../arm/boot/dts/vexpress-v2m-rs1.dtsi", i.e. a > .dtsi supplied by arch/arm. > > Unfortunately this causes some issues for the split device tree > repository[0], since things get moved around there. In that context > the new .dts ends up at src/arm64/arm/vexpress-v2f-1xv7-ca53x2.dts > while the include is at src/arm/vexpress-v2m-rs1.dtsi. > > The sharing of the .dtsi is legitimate since the baseboard is the same > for various vexpress systems whatever processor they use. > > Rather than using ../../ tricks to pickup .dtsi files from another > arch this patch creates a new directory include/dt-dtsi as a > home for such cross-arch .dtsi files, arranges for it to be in the > include path when the .dts files are processed by cpp and switches the > .dts files to use cpp #include instead of /include/. The dtsi file > itself is moved into a vendor subdir in this case "arm" (the vendor, > not the ARCH=). > > [0] https://git.kernel.org/cgit/linux/kernel/git/devicetree/devicetree-rebasing.git/ > > Signed-off-by: Ian Campbell <ian.campbell@citrix.com> I'm happy with the general idea, and having a separate directory for dtsis, with vendor subdirs makes sense to me. So FWIW: Acked-by: Mark Rutland <mark.rutland@arm.com> Mark. > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Pawel Moll <pawel.moll@arm.com> > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: Kumar Gala <galak@codeaurora.org> > Cc: Liviu Dudau <liviu.dudau@arm.com> > Cc: Sudeep Holla <sudeep.holla@arm.com> > Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> > Cc: Russell King <linux@arm.linux.org.uk> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Will Deacon <will.deacon@arm.com> > Cc: Kristina Martsenko <kristina.martsenko@arm.com> > Cc: Kevin Hilman <khilman@linaro.org> > Cc: devicetree@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kbuild@vger.kernel.org > --- > v2: Move to include/dt-dtsi and introduce a per-vendor subdirectory. > --- > Documentation/devicetree/bindings/arm/vexpress.txt | 4 ++-- > arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts | 2 +- > arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 2 +- > arch/arm/boot/dts/vexpress-v2p-ca5s.dts | 2 +- > arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts | 2 +- > {arch/arm/boot/dts => include/dt-dtsi/arm}/vexpress-v2m-rs1.dtsi | 0 > scripts/Makefile.lib | 1 + > 7 files changed, 7 insertions(+), 6 deletions(-) > rename {arch/arm/boot/dts => include/dt-dtsi/arm}/vexpress-v2m-rs1.dtsi (100%) > > diff --git a/Documentation/devicetree/bindings/arm/vexpress.txt b/Documentation/devicetree/bindings/arm/vexpress.txt > index 39844cd..dccf570 100644 > --- a/Documentation/devicetree/bindings/arm/vexpress.txt > +++ b/Documentation/devicetree/bindings/arm/vexpress.txt > @@ -7,7 +7,7 @@ peripherals. Processor and RAM "live" on the tiles. > > The motherboard and each core tile should be described by a separate > Device Tree source file, with the tile's description including > -the motherboard file using a /include/ directive. As the motherboard > +the motherboard file using a #include directive. As the motherboard > can be initialized in one of two different configurations ("memory > maps"), care must be taken to include the correct one. > > @@ -223,7 +223,7 @@ Example of a VE tile description (simplified) > /* Active high IRQ 0 is connected to GIC's SPI0 */ > interrupt-map = <0 0 0 &gic 0 0 4>; > > - /include/ "vexpress-v2m-rs1.dtsi" > + #include <arm/vexpress-v2m-rs1.dtsi> > }; > }; > > diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts > index 9420053..7ea7054 100644 > --- a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts > +++ b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts > @@ -278,6 +278,6 @@ > <0 0 41 &gic 0 41 4>, > <0 0 42 &gic 0 42 4>; > > - /include/ "vexpress-v2m-rs1.dtsi" > + #include <arm/vexpress-v2m-rs1.dtsi> > }; > }; > diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts > index 17f63f7..afe997a4 100644 > --- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts > +++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts > @@ -636,6 +636,6 @@ > <0 0 41 &gic 0 41 4>, > <0 0 42 &gic 0 42 4>; > > - /include/ "vexpress-v2m-rs1.dtsi" > + #include <arm/vexpress-v2m-rs1.dtsi> > }; > }; > diff --git a/arch/arm/boot/dts/vexpress-v2p-ca5s.dts b/arch/arm/boot/dts/vexpress-v2p-ca5s.dts > index d2709b7..498181c 100644 > --- a/arch/arm/boot/dts/vexpress-v2p-ca5s.dts > +++ b/arch/arm/boot/dts/vexpress-v2p-ca5s.dts > @@ -248,6 +248,6 @@ > <0 0 41 &gic 0 41 4>, > <0 0 42 &gic 0 42 4>; > > - /include/ "vexpress-v2m-rs1.dtsi" > + #include <arm/vexpress-v2m-rs1.dtsi> > }; > }; > diff --git a/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts b/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts > index 5b1d018..b86c5a8 100644 > --- a/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts > +++ b/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts > @@ -186,6 +186,6 @@ > <0 0 41 &gic GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>, > <0 0 42 &gic GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>; > > - /include/ "../../../../arm/boot/dts/vexpress-v2m-rs1.dtsi" > + #include <arm/vexpress-v2m-rs1.dtsi> > }; > }; > diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/include/dt-dtsi/arm/vexpress-v2m-rs1.dtsi > similarity index 100% > rename from arch/arm/boot/dts/vexpress-v2m-rs1.dtsi > rename to include/dt-dtsi/arm/vexpress-v2m-rs1.dtsi > diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib > index 79e8661..0d948d4 100644 > --- a/scripts/Makefile.lib > +++ b/scripts/Makefile.lib > @@ -163,6 +163,7 @@ dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ > -I$(srctree)/arch/$(SRCARCH)/boot/dts \ > -I$(srctree)/arch/$(SRCARCH)/boot/dts/include \ > -I$(srctree)/drivers/of/testcase-data \ > + -I$(srctree)/include/dt-dtsi \ > -undef -D__DTS__ > > # Finds the multi-part object the current object will be linked into > -- > 2.1.4 >
diff --git a/Documentation/devicetree/bindings/arm/vexpress.txt b/Documentation/devicetree/bindings/arm/vexpress.txt index 39844cd..dccf570 100644 --- a/Documentation/devicetree/bindings/arm/vexpress.txt +++ b/Documentation/devicetree/bindings/arm/vexpress.txt @@ -7,7 +7,7 @@ peripherals. Processor and RAM "live" on the tiles. The motherboard and each core tile should be described by a separate Device Tree source file, with the tile's description including -the motherboard file using a /include/ directive. As the motherboard +the motherboard file using a #include directive. As the motherboard can be initialized in one of two different configurations ("memory maps"), care must be taken to include the correct one. @@ -223,7 +223,7 @@ Example of a VE tile description (simplified) /* Active high IRQ 0 is connected to GIC's SPI0 */ interrupt-map = <0 0 0 &gic 0 0 4>; - /include/ "vexpress-v2m-rs1.dtsi" + #include <arm/vexpress-v2m-rs1.dtsi> }; }; diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts index 9420053..7ea7054 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts @@ -278,6 +278,6 @@ <0 0 41 &gic 0 41 4>, <0 0 42 &gic 0 42 4>; - /include/ "vexpress-v2m-rs1.dtsi" + #include <arm/vexpress-v2m-rs1.dtsi> }; }; diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts index 17f63f7..afe997a4 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts @@ -636,6 +636,6 @@ <0 0 41 &gic 0 41 4>, <0 0 42 &gic 0 42 4>; - /include/ "vexpress-v2m-rs1.dtsi" + #include <arm/vexpress-v2m-rs1.dtsi> }; }; diff --git a/arch/arm/boot/dts/vexpress-v2p-ca5s.dts b/arch/arm/boot/dts/vexpress-v2p-ca5s.dts index d2709b7..498181c 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca5s.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca5s.dts @@ -248,6 +248,6 @@ <0 0 41 &gic 0 41 4>, <0 0 42 &gic 0 42 4>; - /include/ "vexpress-v2m-rs1.dtsi" + #include <arm/vexpress-v2m-rs1.dtsi> }; }; diff --git a/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts b/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts index 5b1d018..b86c5a8 100644 --- a/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts +++ b/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts @@ -186,6 +186,6 @@ <0 0 41 &gic GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>, <0 0 42 &gic GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>; - /include/ "../../../../arm/boot/dts/vexpress-v2m-rs1.dtsi" + #include <arm/vexpress-v2m-rs1.dtsi> }; }; diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/include/dt-dtsi/arm/vexpress-v2m-rs1.dtsi similarity index 100% rename from arch/arm/boot/dts/vexpress-v2m-rs1.dtsi rename to include/dt-dtsi/arm/vexpress-v2m-rs1.dtsi diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 79e8661..0d948d4 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -163,6 +163,7 @@ dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ -I$(srctree)/arch/$(SRCARCH)/boot/dts \ -I$(srctree)/arch/$(SRCARCH)/boot/dts/include \ -I$(srctree)/drivers/of/testcase-data \ + -I$(srctree)/include/dt-dtsi \ -undef -D__DTS__ # Finds the multi-part object the current object will be linked into
Commit 9ccd608070b6 "arm64: dts: add device tree for ARM SMM-A53x2 on LogicTile Express 20MG" added a new dts file to arch/arm64 which included "../../../../arm/boot/dts/vexpress-v2m-rs1.dtsi", i.e. a .dtsi supplied by arch/arm. Unfortunately this causes some issues for the split device tree repository[0], since things get moved around there. In that context the new .dts ends up at src/arm64/arm/vexpress-v2f-1xv7-ca53x2.dts while the include is at src/arm/vexpress-v2m-rs1.dtsi. The sharing of the .dtsi is legitimate since the baseboard is the same for various vexpress systems whatever processor they use. Rather than using ../../ tricks to pickup .dtsi files from another arch this patch creates a new directory include/dt-dtsi as a home for such cross-arch .dtsi files, arranges for it to be in the include path when the .dts files are processed by cpp and switches the .dts files to use cpp #include instead of /include/. The dtsi file itself is moved into a vendor subdir in this case "arm" (the vendor, not the ARCH=). [0] https://git.kernel.org/cgit/linux/kernel/git/devicetree/devicetree-rebasing.git/ Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Kumar Gala <galak@codeaurora.org> Cc: Liviu Dudau <liviu.dudau@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Kristina Martsenko <kristina.martsenko@arm.com> Cc: Kevin Hilman <khilman@linaro.org> Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kbuild@vger.kernel.org --- v2: Move to include/dt-dtsi and introduce a per-vendor subdirectory. --- Documentation/devicetree/bindings/arm/vexpress.txt | 4 ++-- arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts | 2 +- arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 2 +- arch/arm/boot/dts/vexpress-v2p-ca5s.dts | 2 +- arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts | 2 +- {arch/arm/boot/dts => include/dt-dtsi/arm}/vexpress-v2m-rs1.dtsi | 0 scripts/Makefile.lib | 1 + 7 files changed, 7 insertions(+), 6 deletions(-) rename {arch/arm/boot/dts => include/dt-dtsi/arm}/vexpress-v2m-rs1.dtsi (100%)