Hello Ian, Rob, Olof, 2015-10-13 0:37 GMT+09:00 Mark Rutland <mark.rutland@xxxxxxx>: > 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@xxxxxxxxxx> >> Cc: Rob Herring <robh+dt@xxxxxxxxxx> >> Cc: Pawel Moll <pawel.moll@xxxxxxx> >> Cc: Mark Rutland <mark.rutland@xxxxxxx> >> Cc: Kumar Gala <galak@xxxxxxxxxxxxxx> >> Cc: Liviu Dudau <liviu.dudau@xxxxxxx> >> Cc: Sudeep Holla <sudeep.holla@xxxxxxx> >> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> >> Cc: Russell King <linux@xxxxxxxxxxxxxxxx> >> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> >> Cc: Will Deacon <will.deacon@xxxxxxx> >> Cc: Kristina Martsenko <kristina.martsenko@xxxxxxx> >> Cc: Kevin Hilman <khilman@xxxxxxxxxx> >> Cc: Frank Rowand <frank.rowand@xxxxxxxxxxxxxx> >> Cc: Olof Johansson <olof@xxxxxxxxx> >> Cc: devicetree@xxxxxxxxxxxxxxx >> Cc: linux-kernel@xxxxxxxxxxxxxxx >> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx >> Cc: arm@xxxxxxxxxx >> Cc: linux-kbuild@xxxxxxxxxxxxxxx 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 devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
