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Message-ID: <CAK7LNAQsckXsoPgBmowu4mHi4kemM5i=Fq4z7BwuKbNv7Ur54w@mail.gmail.com> Date: Wed, 14 Oct 2015 11:14:21 +0900 From: Masahiro Yamada <yamada.masahiro@...ionext.com> To: Mark Rutland <mark.rutland@....com>, Ian Campbell <ian.campbell@...rix.com>, Rob Herring <robh+dt@...nel.org>, Olof Johansson <olof@...om.net> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Pawel Moll <pawel.moll@....com>, Kumar Gala <galak@...eaurora.org>, Liviu Dudau <liviu.dudau@....com>, 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>, Frank Rowand <frank.rowand@...ymobile.com>, devicetree@...r.kernel.org, linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>, arm@...nel.org, Linux Kbuild mailing list <linux-kbuild@...r.kernel.org> Subject: Re: [PATCH] ARM64: dts: vexpress: Use a symlink to vexpress-v2m-rs1.dtsi from arch=arm Hello Ian, Rob, Olof, 2015-10-13 0:37 GMT+09:00 Mark Rutland <mark.rutland@....com>: > On Mon, Oct 05, 2015 at 12:53:52PM +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. >> >> Previously I attempted to resolve this by creating a shared location >> for such things but we have been unable to come to a consensus on >> where that should be. >> >> Instead this patch simply replaces the use of ../../ in the dts >> /include/ with a symlink in arch/arm64/boot/dts/arm pointing to the >> file arch/arm/boot/dts. >> >> Since the split device tree repo will shortly be required to flatten >> symlinks for other reasons this will cause the dtsi file to appear in >> both src/arm and src/arm64 in the split repo, which is an improvement >> on not building for arm64 now. >> >> [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: Frank Rowand <frank.rowand@...ymobile.com> >> Cc: Olof Johansson <olof@...om.net> >> Cc: devicetree@...r.kernel.org >> Cc: linux-kernel@...r.kernel.org >> Cc: linux-arm-kernel@...ts.infradead.org >> Cc: arm@...nel.org >> Cc: linux-kbuild@...r.kernel.org I have a similar issue to vexpress, so I want to consult experts. I am trying to support a new ARM64 SoC and want to share some DTSI files between arch/arm/boot/dts and arch/arm64/boot/dts. I think Ian's "dtb: Create a common home for cross-architecture dtsi files" is under way (or rejected?). I can live with the symbolic link. Is it OK (at least for now)? -- Best Regards Masahiro Yamada -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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