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Date: Wed, 22 Jul 2015 09:47:53 +0100
From: Liviu Dudau <Liviu.Dudau@....com>
To: Ian Campbell <ian.campbell@...rix.com>
Cc: "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <Pawel.Moll@....com>,
Mark Rutland <Mark.Rutland@....com>,
Kumar Gala <galak@...eaurora.org>,
Sudeep Holla <Sudeep.Holla@....com>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
Russell King <linux@....linux.org.uk>,
Catalin Marinas <Catalin.Marinas@....com>,
Will Deacon <Will.Deacon@....com>,
Kristina Martsenko <Kristina.Martsenko@....com>,
Kevin Hilman <khilman@...aro.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kbuild@...r.kernel.org" <linux-kbuild@...r.kernel.org>
Subject: Re: [PATCH] dtb: Create a common home for cross-architecture dtsi
files.
On Tue, Jul 21, 2015 at 05:30:04PM +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-bindings/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/.
>
> [0] https://git.kernel.org/cgit/linux/kernel/git/devicetree/devicetree-rebasing.git/
>
> Signed-off-by: Ian Campbell <ian.campbell@...rix.com>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Pawel Moll <pawel.moll@....com>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: Kumar Gala <galak@...eaurora.org>
> Cc: Liviu Dudau <liviu.dudau@....com>
> Cc: Sudeep Holla <sudeep.holla@....com>
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> Cc: Russell King <linux@....linux.org.uk>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Kristina Martsenko <kristina.martsenko@....com>
> Cc: Kevin Hilman <khilman@...aro.org>
> Cc: devicetree@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kbuild@...r.kernel.org
Acked-by: Liviu Dudau <Liviu.Dudau@....com>
Picking your brains here: would it be worth to have some vendor directories in
this shared area or we can hope that there will be very few files living here?
Best regards,
Liviu
> ---
> Documentation/devicetree/bindings/arm/vexpress.txt | 2 +-
> 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-bindings/dtsi}/vexpress-v2m-rs1.dtsi | 0
> scripts/Makefile.lib | 1 +
> 7 files changed, 6 insertions(+), 5 deletions(-)
> rename {arch/arm/boot/dts => include/dt-bindings/dtsi}/vexpress-v2m-rs1.dtsi (100%)
>
> diff --git a/Documentation/devicetree/bindings/arm/vexpress.txt b/Documentation/devicetree/bindings/arm/vexpress.txt
> index 39844cd..46c6b04 100644
> --- a/Documentation/devicetree/bindings/arm/vexpress.txt
> +++ b/Documentation/devicetree/bindings/arm/vexpress.txt
> @@ -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 <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..85b201e 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 <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..fe5091d 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 <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..a028d59 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 <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..b4257ee 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 <vexpress-v2m-rs1.dtsi>
> };
> };
> diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/include/dt-bindings/dtsi/vexpress-v2m-rs1.dtsi
> similarity index 100%
> rename from arch/arm/boot/dts/vexpress-v2m-rs1.dtsi
> rename to include/dt-bindings/dtsi/vexpress-v2m-rs1.dtsi
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index 79e8661..bb10128 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-bindings/dtsi \
> -undef -D__DTS__
>
> # Finds the multi-part object the current object will be linked into
> --
> 2.1.4
>
--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
¯\_(ツ)_/¯
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