Hello Ian, Rob, Olof,
2015-10-13 0:37 GMT+09:00 Mark Rutland <mark.rutl...@arm.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.campb...@citrix.com> >> Cc: Rob Herring <robh...@kernel.org> >> Cc: Pawel Moll <pawel.m...@arm.com> >> Cc: Mark Rutland <mark.rutl...@arm.com> >> Cc: Kumar Gala <ga...@codeaurora.org> >> Cc: Liviu Dudau <liviu.du...@arm.com> >> Cc: Sudeep Holla <sudeep.ho...@arm.com> >> Cc: Lorenzo Pieralisi <lorenzo.pieral...@arm.com> >> Cc: Russell King <li...@arm.linux.org.uk> >> Cc: Catalin Marinas <catalin.mari...@arm.com> >> Cc: Will Deacon <will.dea...@arm.com> >> Cc: Kristina Martsenko <kristina.martse...@arm.com> >> Cc: Kevin Hilman <khil...@linaro.org> >> Cc: Frank Rowand <frank.row...@sonymobile.com> >> Cc: Olof Johansson <o...@lixom.net> >> Cc: devicet...@vger.kernel.org >> Cc: linux-kernel@vger.kernel.org >> Cc: linux-arm-ker...@lists.infradead.org >> Cc: a...@kernel.org >> Cc: linux-kbu...@vger.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 majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/