Hi Giulio, On Thu, 14 Oct 2021 at 15:12, Giulio Benetti <giulio.bene...@benettiengineering.com> wrote: > > Hi Simon, > > Il giorno 14 ott 2021, alle ore 22:43, Simon Glass <s...@chromium.org> ha > scritto: > > Hi Giulio, > > On Thu, 14 Oct 2021 at 13:23, Giulio Benetti > <giulio.bene...@benettiengineering.com> wrote: > > > Hi Simon, > > > Il giorno 14 ott 2021, alle ore 20:24, Simon Glass <s...@chromium.org> ha > scritto: > > > Hi, > > > On Thu, 14 Oct 2021 at 07:46, Tom Rini <tr...@konsulko.com> wrote: > > > On Thu, Oct 14, 2021 at 02:53:30AM +0200, Giulio Benetti wrote: > > > Hello All, > > > is there a way to pass a dts file without touching the > arch/arm/boot/dts/Makefile? > > > On Buildroot we support the possibility to pass an external dts by copying it > to the uboot sources to > > be built but since uboot version 2020.01 it doesn’t work anymore. > > > So I’ve proposed a patch to prepend the dts file in the Makefile above, but > this has drawbacks, like we reconfigure(it keeps adding files every time). > > > So I ask you, is there a more canonical way already to achieve this? > > > Not exactly, and it's something we're very much actively discussing > > right now. > > > Are you using 'make DEVICE_TREE=xxx' ? > > > Yes but it doesn’t work if you don’t add an entry into arch/arm/dts/Makefile > > Before version 2020.01 worked, but not after it. > > > What board are you building? > > > A20-OLinuXino-Lime_defconfig for but without CONFIG_DEFAULT_DEVICE_TREE > undefined, > so if you try to pass DEVICE_TREE= pointing to an external .dts file copied > to arch/arm/dts/ make doesn’t find the entry in Makefile and it can’t build > it. > > This is useful in build systems like Buildroot where you can provide an > external defconfig as well as an external .dts file. > > So here the solution I see is to create an entry in arch/arm/dts/Makefile on > the top of the file afte copying the .dts file we want to build. > But on Buildroot they’ve pointed me to ask upstream(here) if there’s a more > canonical way or to work together to achieve the goal: > > https://patchwork.ozlabs.org/project/buildroot/patch/20210209201303.195093-1-giulio.bene...@benettiengineering.com/
How about not disabling CONFIG_DEFAULT_DEVICE_TREE ? That should work OK. Regards, Simon > > Sorry if this e-mail is html but I’m on mobile :-/ > > Best regards > Giulio Benetti > > > Regards, > Simon
