Messages in this thread | | | From | Frank Wunderlich <> | Subject | Aw: Re: [RFC v3 11/11] arm64: dts: mt7986: add BPI-R3 nand/nor overlays | Date | Tue, 15 Nov 2022 17:50:09 +0100 |
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Hi
> Gesendet: Freitag, 11. November 2022 um 10:16 Uhr > Von: "Matthias Brugger" <matthias.bgg@gmail.com> > An: "Frank Wunderlich" <linux@fw-web.de>, linux-mediatek@lists.infradead.org, "Rob Herring" <robh+dt@kernel.org>, "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org> > Cc: "Frank Wunderlich" <frank-w@public-files.de>, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org > Betreff: Re: [RFC v3 11/11] arm64: dts: mt7986: add BPI-R3 nand/nor overlays > > Rob, Krzysztof, > > On 06/11/2022 09:50, Frank Wunderlich wrote: > > From: Frank Wunderlich <frank-w@public-files.de> > > > > Add devicetree overlays for using nand and nor on BPI-R3. > > > > Signed-off-by: Frank Wunderlich <frank-w@public-files.de> > > --- > > 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. > > @frank In any case we would need to apply these overlays to some base board to > create a valis dtb.
yes of course, the "base board" is either the sd or the emmc fdt i added 1 patch before. This way it allows all 4 combinations (sd+nand, sd+nor, emmc+nand, emmc+nor).
as i pointed in v4 of this Patch there is a commit in robs tree allow building dt overlays from dtso-files...
"kbuild: Allow DTB overlays to built from .dtso named source files" https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git/commit/?h=dt/next&id=363547d2191cbc32ca954ba75d72908712398ff2
maybe this is the right way to go (rename my current dts to dtso)?
> Regards, > Matthias
regards Frank
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