On Fri, Nov 11, 2022 at 3:16 AM Matthias Brugger <matthias.bgg@xxxxxxxxx> wrote: > > Rob, Krzysztof, > > On 06/11/2022 09:50, Frank Wunderlich wrote: > > From: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx> > > > > Add devicetree overlays for using nand and nor on BPI-R3. Overlays are necessary because ...? > > Signed-off-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx> > > --- > > arch/arm64/boot/dts/mediatek/Makefile | 2 + > > .../mediatek/mt7986a-bananapi-bpi-r3-nand.dts | 53 +++++++++++++++ > > .../mediatek/mt7986a-bananapi-bpi-r3-nor.dts | 67 +++++++++++++++++++ > > 3 files changed, 122 insertions(+) > > create mode 100644 arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3-nand.dts > > create mode 100644 arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3-nor.dts > > > > diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile > > index e8902f2cc58f..d42208c4090d 100644 > > --- a/arch/arm64/boot/dts/mediatek/Makefile > > +++ b/arch/arm64/boot/dts/mediatek/Makefile > > @@ -8,6 +8,8 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-x20-dev.dtb > > dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb > > dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-bananapi-bpi-r64.dtb > > dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-emmc.dtb > > +dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-nand.dtbo > > +dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-nor.dtbo > > Do we allow the inclusion of overlays in the kernel? > I don't think so. I see there are some dtbos for some freescale platforms, but I > wasn't aware that we support that. I thought it is all about dtsi includes. Yes, we do. > @frank In any case we would need to apply these overlays to some base board to > create a valis dtb. Indeed. The build system supports this and it's a requirement (though not easily enforced) that overlays apply to something. It works much like how kbuild combines multiple .o files into a module. Please rename to .dtso though. I copied you all on the PR I just sent. Rob
