From mboxrd@z Thu Jan 1 00:00:00 1970 From: kraxel@redhat.com (Gerd Hoffmann) Date: Thu, 02 Jun 2016 08:56:05 +0200 Subject: [PATCH 09/32] bcm2837-rpi-3-b.dts for 32bit arm In-Reply-To: <5616246.RRQ2rLjLud@wuerfel> References: <1464817421-8519-1-git-send-email-kraxel@redhat.com> <7065434.SNfT8zjcK3@wuerfel> <87zir4leyc.fsf@eliezer.anholt.net> <5616246.RRQ2rLjLud@wuerfel> Message-ID: <1464850565.24775.40.camel@redhat.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Do, 2016-06-02 at 00:39 +0200, Arnd Bergmann wrote: > On Wednesday, June 1, 2016 3:30:35 PM CEST Eric Anholt wrote: > > Arnd Bergmann writes: > > > > > On Wednesday, June 1, 2016 11:43:18 PM CEST Gerd Hoffmann wrote: > > >> diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts > > >> new file mode 100644 > > >> index 0000000..36178a6 > > >> --- /dev/null > > >> +++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts > > >> @@ -0,0 +1 @@ > > >> +#include "../../../arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts" > > >> -- > > >> 1.8.3.1 > > >> > > > > > > What does this gain you? > > > > Many Raspberry Pi users use a small set of SD cards that they swap > > between various versions of the hardware. It would be good to have > > their 32-bit OS images work on the Pi3 as well. > > Sure, but you already have the dts file in the other directory, > and the dtb is the same. > > According to the comment in the other patch, the idea was to have > the file in the arm64 directory because it's a 64-bit platform, > but now you have it here as well. Well, it just includes the arm64 version as-is, so we don't have duplication. I'm open to suggestions to how handle this better. Symbolic link? Reference to ../../../arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts directly in the Makefile? I've seen arch/arm/boot/dts/Makefile uses globs on *.dts, so I suspect the later wouldn't be that straight forward. cheers, Gerd