Re: [PATCH v2 1/2] arm64: dts: add minimal DTS for Microsoft Surface Duo2

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On Tue, Nov 23, 2021 at 09:30:01AM +0530, Vinod Koul wrote:
> On 22-11-21, 11:05, Katherine Perez wrote:
> > This is a minimal devicetree for Microsoft Surface Duo 2 with SM8350
> > Chipset
> > 
> > Signed-off-by: Katherine Perez <kaperez@xxxxxxxxxxxxxxxxxxx>
> > ---
> > 
> > Changes since v1:
> > - Change remoteprocs firmware-naming scheme to qcom/sm8350/microsft/*
> > - Add chassis-type
> > 
> >  arch/arm64/boot/dts/qcom/Makefile             |   1 +
> >  .../qcom/sm8350-microsoft-surface-duo2.dts    | 369 ++++++++++++++++++
> >  2 files changed, 370 insertions(+)
> >  create mode 100644 arch/arm64/boot/dts/qcom/sm8350-microsoft-surface-duo2.dts
> > 
> > diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> > index 6b816eb33309..a8cc6bd3c423 100644
> > --- a/arch/arm64/boot/dts/qcom/Makefile
> > +++ b/arch/arm64/boot/dts/qcom/Makefile
> > @@ -106,4 +106,5 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sm8250-mtp.dtb
> >  dtb-$(CONFIG_ARCH_QCOM)	+= sm8250-sony-xperia-edo-pdx203.dtb
> >  dtb-$(CONFIG_ARCH_QCOM)	+= sm8250-sony-xperia-edo-pdx206.dtb
> >  dtb-$(CONFIG_ARCH_QCOM)	+= sm8350-hdk.dtb
> > +dtb-$(CONFIG_ARCH_QCOM)	+= sm8350-microsoft-surface-duo2.dtb
> >  dtb-$(CONFIG_ARCH_QCOM)	+= sm8350-mtp.dtb
> > diff --git a/arch/arm64/boot/dts/qcom/sm8350-microsoft-surface-duo2.dts b/arch/arm64/boot/dts/qcom/sm8350-microsoft-surface-duo2.dts
> > new file mode 100644
> > index 000000000000..d4963c9015cb
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/qcom/sm8350-microsoft-surface-duo2.dts
> > @@ -0,0 +1,369 @@
> > +// SPDX-License-Identifier: BSD-3-Clause
> > +/*
> > + * Copyright (C) 2021, Microsoft Corporation
> > + */
> > +
> > +/dts-v1/;
> > +
> > +#include <dt-bindings/gpio/gpio.h>
> > +#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> > +#include "sm8350.dtsi"
> > +#include "pm8350.dtsi"
> > +#include "pm8350b.dtsi"
> > +#include "pm8350c.dtsi"
> > +#include "pmk8350.dtsi"
> > +#include "pmr735a.dtsi"
> > +#include "pmr735b.dtsi"
> > +
> > +/ {
> > +	model = "Microsoft Surface Duo 2";
> > +	compatible = "microsoft,surface-duo2", "qcom,sm8350";
> > +	chassis-type = "handset";
> 
> This is interesting, I see it used at lot of place, unfortunately, it
> does not seem to be documented :(
> 
> -- 
> ~Vinod

Hi Vinod,

Looks like "chassis-type" is documented in the Devicetree Specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter3-devicenodes.html.

-Katherine



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