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 > --- > For more on flattening symlinks see > http://thread.gmane.org/gmane.linux.kernel.input/45646/focus=45742 > --- > arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts | 2 +- > arch/arm64/boot/dts/arm/vexpress-v2m-rs1.dtsi | 1 + > 2 files changed, 2 insertions(+), 1 deletion(-) > create mode 120000 arch/arm64/boot/dts/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..bb3c26d 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/arm64/boot/dts/arm/vexpress-v2m-rs1.dtsi b/arch/arm64/boot/dts/arm/vexpress-v2m-rs1.dtsi > new file mode 120000 > index 0000000..68fd0f8 > --- /dev/null > +++ b/arch/arm64/boot/dts/arm/vexpress-v2m-rs1.dtsi > @@ -0,0 +1 @@ > +../../../../arm/boot/dts/vexpress-v2m-rs1.dtsi > \ No newline at end of file I was under the impression that there was some reason symlinks of this fashion were discouraged, but I don't know the details, and I don't have strong feelings either way. This solves a problem, and we don't seem to have a better solution. So to that end: Acked-by: Mark Rutland <mark.rutland@xxxxxxx> Thanks, Mark. -- 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
