On Fri, Feb 12, 2021 at 5:05 AM Rob Herring <robh+dt@xxxxxxxxxx> wrote: > > On Thu, Feb 11, 2021 at 12:28 PM Masahiro Yamada <masahiroy@xxxxxxxxxx> wrote: > > > > On Wed, Feb 10, 2021 at 8:13 PM Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote: > > > > > > From: Rob Herring <robh@xxxxxxxxxx> > > > > > > Add a generic rule to apply fdtoverlay in Makefile.lib, so every > > > platform doesn't need to carry the complex rule. > > > > > > The platform's Makefile only needs to have this now: > > > > > > DTC_FLAGS_foo_base += -@ > > > foo-dtbs := foo_base.dtb foo_overlay1.dtbo foo_overlay2.dtbo > > > overlay-y := foo.dtb > > > > > > Please reuse dtb-y instead of introducing the new > > overlay-y syntax, that is, > > > > foo-dtbs := foo_base.dtb foo_overlay1.dtbo foo_overlay2.dtbo > > dtb-y := foo.dtb > > That's what I had, but I believe Viresh changed this because we don't > want to run schema checks on foo.dtb (as foo.dts doesn't exist). > However, we should be able to filter those out using something similar > to technique used for multi-used-y and real-obj-y. We just need to > drop composite entries when creating the .dt.yaml list. Yes, I think this will work. BTW, I do not know how to use overlay. Do we apply overlay in the build time? If so, I do not know what the benefit of overlay is. Or is this just for build testing? I just thought this was done in the boot time, for example, in U-Boot or something. -- Best Regards Masahiro Yamada
