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Message-ID: <CAL_Jsq+pVg-wZAccCVrfSeDygpb80Z28Ke9TOJxNPeyUMWvLdA@mail.gmail.com>
Date:   Tue, 4 May 2021 08:40:53 -0500
From:   Rob Herring <robh@...nel.org>
To:     Nava kishore Manne <navam@...inx.com>
Cc:     Michal Simek <michals@...inx.com>,
        "mdf@...nel.org" <mdf@...nel.org>,
        "trix@...hat.com" <trix@...hat.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "arnd@...db.de" <arnd@...db.de>, Rajan Vaja <RAJANV@...inx.com>,
        Amit Sunil Dhamne <amitsuni@...x.xilinx.com>,
        Manish Narani <MNARANI@...inx.com>,
        "zou_wei@...wei.com" <zou_wei@...wei.com>,
        Sai Krishna Potthuri <lakshmis@...inx.com>,
        "iwamatsu@...auri.org" <iwamatsu@...auri.org>,
        Jiaying Liang <jliang@...inx.com>,
        "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-fpga@...r.kernel.org" <linux-fpga@...r.kernel.org>,
        "chinnikishore369@...il.com" <chinnikishore369@...il.com>,
        git <git@...inx.com>
Subject: Re: [PATCH v4 1/4] dt-bindings: firmware: Add bindings for xilinx firmware

On Tue, May 4, 2021 at 4:34 AM Nava kishore Manne <navam@...inx.com> wrote:
>
> Hi Rob,
>
>         Please find my response inline.
>
> > -----Original Message-----
> > From: Rob Herring <robh@...nel.org>
> > Sent: Saturday, May 1, 2021 1:10 AM
> > To: Nava kishore Manne <navam@...inx.com>
> > Cc: Michal Simek <michals@...inx.com>; mdf@...nel.org; trix@...hat.com;
> > gregkh@...uxfoundation.org; arnd@...db.de; Rajan Vaja
> > <RAJANV@...inx.com>; Amit Sunil Dhamne <amitsuni@...x.xilinx.com>;
> > Manish Narani <MNARANI@...inx.com>; zou_wei@...wei.com; Sai Krishna
> > Potthuri <lakshmis@...inx.com>; iwamatsu@...auri.org; Jiaying Liang
> > <jliang@...inx.com>; linus.walleij@...aro.org; devicetree@...r.kernel.org;
> > linux-arm-kernel@...ts.infradead.org; linux-kernel@...r.kernel.org; linux-
> > fpga@...r.kernel.org; chinnikishore369@...il.com; git <git@...inx.com>
> > Subject: Re: [PATCH v4 1/4] dt-bindings: firmware: Add bindings for xilinx
> > firmware
> >
> > On Thu, Apr 29, 2021 at 07:34:05PM +0530, Nava kishore Manne wrote:
> > > Add documentation to describe Xilinx firmware driver bindings.
> > > Firmware driver provides an interface to firmware APIs.
> > > Interface APIs can be used by any driver to communicate to Platform
> > > Management Unit.
> > >
> > > Signed-off-by: Nava kishore Manne <nava.manne@...inx.com>
> > > ---
> > > Changes for v4:
> > >                 -Added new yaml file for xilinx firmware
> > >                  as suggested by Rob.
> > >
> > >  .../firmware/xilinx/xlnx,zynqmp-firmware.yaml | 63
> > > +++++++++++++++++++
> > >  1 file changed, 63 insertions(+)
> > >  create mode 100644
> > > Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-
> > firmware
> > > .yaml
> >
> > What about the old doc?:
> >
>
> As you suggested i have added only the fpga node relevant info here so it's not representing the complete firmware file with other sub node like clk, Aes, ...etc.
> Once it completely mature we can deprecate the Old doc.
>
> > Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-
> > firmware.txt
> >
> > >
> > > diff --git
> > > a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-
> > firmwa
> > > re.yaml
> > > b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-
> > firmwa
> > > re.yaml
> > > new file mode 100644
> > > index 000000000000..4b97f005bed7
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-fi
> > > +++ rmware.yaml
> > > @@ -0,0 +1,63 @@
> > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> > > +---
> > > +$id:
> > > +http://devicetree.org/schemas/firmware/xilinx/xlnx,zynqmp-firmware.ya
> > > +ml#
> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: Xilinx firmware driver
> > > +
> > > +maintainers:
> > > +  - Nava kishore Manne <nava.manne@...inx.com>
> > > +
> > > +description:
> > > +  The zynqmp-firmware node describes the interface to platform
> > firmware.
> > > +  ZynqMP has an interface to communicate with secure firmware.
> > > +Firmware
> > > +  driver provides an interface to firmware APIs. Interface APIs can
> > > +be
> > > +  used by any driver to communicate to PMUFW(Platform Management
> > Unit).
> > > +  These requests include clock management, pin control, device
> > > +control,
> > > +  power management service, FPGA service and other platform
> > > +management
> > > +  services.
> > > +
> > > +properties:
> > > +  compatible:
> > > +    oneOf:
> > > +      - description:
> > > +          For implementations complying for Zynq Ultrascale+ MPSoC.
> > > +        const: xlnx,zynqmp-firmware
> > > +
> > > +      - description:
> > > +          For implementations complying for Versal.
> > > +        const: xlnx,versal-firmware
> > > +
> > > +  method:
> > > +    description: The method of calling the PM-API firmware layer.
> > > +                #  Permitted values are:
> > > +                #  - "smc" : SMC #0, following the SMCCC
> > > +                #  - "hvc" : HVC #0, following the SMCCC
> >
> > Drop the '#'. If you want to maintain the formatting, then use '|' after
> > 'description:' for a literal block.
> >
>
> Will fix in v5.
>
> > > +    $ref: /schemas/types.yaml#/definitions/string-array
> > > +    enum:
> > > +      - smc
> > > +      - hvc
> > > +
> > > +patternProperties:
> > > +  "fpga":
> >
> > So 'foofpgabar' is valid?
> >
>
> Yes, it's a valid for fpga node.

No, please make the node name more specific.

Rob

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