linux-kernel - RE: [PATCH v6 1/4] dt-bindings: soc: imx8m: add DT Binding doc for soc unique ID

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Message-ID: <AM6PR04MB60533A06C19AA37213C93F54E2F40@AM6PR04MB6053.eurprd04.prod.outlook.com>
Date:   Tue, 1 Dec 2020 03:31:16 +0000
From:   "Alice Guo (OSS)" <alice.guo@....nxp.com>
To:     Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>
CC:     "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Peng Fan <peng.fan@....com>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "krzk@...nel.org" <krzk@...nel.org>,
        dl-linux-imx <linux-imx@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH v6 1/4] dt-bindings: soc: imx8m: add DT Binding doc for
 soc unique ID

> -----Original Message-----
> From: linux-arm-kernel <linux-arm-kernel-bounces@...ts.infradead.org> On
> Behalf Of Rob Herring
> Sent: 2020年12月1日 5:57
> To: Alice Guo <alice.guo@....com>
> Cc: devicetree@...r.kernel.org; Peng Fan <peng.fan@....com>;
> s.hauer@...gutronix.de; linux-kernel@...r.kernel.org; krzk@...nel.org;
> dl-linux-imx <linux-imx@....com>; shawnguo@...nel.org;
> linux-arm-kernel@...ts.infradead.org
> Subject: Re: [PATCH v6 1/4] dt-bindings: soc: imx8m: add DT Binding doc for soc
> unique ID
> 
> On Tue, Nov 24, 2020 at 09:59:46AM +0800, Alice Guo wrote:
> > Add DT Binding doc for the Unique ID of i.MX 8M series.
> >
> > Signed-off-by: Alice Guo <alice.guo@....com>
> > ---
> >
> > v2: remove the subject prefix "LF-2571-1"
> > v3: put it into Documentation/devicetree/bindings/arm/fsl.yaml
> 
> No, I prefer this be a separate schema file and not clutter board/soc schemas
> with child nodes.

Hi,
Thank you for your comments. I read "Documentation/devicetree/bindings/arm/arm,realview.yaml"
in which there is a "soc". So I added my "soc" to this current file. Can I keep it in Documentation/devicetree/bindings/arm/fsl.yaml?

> >     modify the description of nvmem-cells
> >     use "make ARCH=arm64 dtbs_check" to test it and fix errors
> > v4: use allOf to limit new version DTS files for i.MX8M to include
> >     "fsl,imx8mm/n/p/q-soc", nvmem-cells and nvmem-cells-names
> > v5: correct the error of using allOf
> > v6: none
> >
> >  .../devicetree/bindings/arm/fsl.yaml          | 47
> +++++++++++++++++++
> >  1 file changed, 47 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml
> > b/Documentation/devicetree/bindings/arm/fsl.yaml
> > index 67980dcef66d..7132ffd41abb 100644
> > --- a/Documentation/devicetree/bindings/arm/fsl.yaml
> > +++ b/Documentation/devicetree/bindings/arm/fsl.yaml
> > @@ -918,6 +918,53 @@ properties:
> >                - fsl,s32v234-evb           # S32V234-EVB2 Customer
> Evaluation Board
> >            - const: fsl,s32v234
> >
> > +  soc:
> > +    type: object
> > +    properties:
> > +      compatible:
> > +        oneOf:
> > +          - description: new version compatible for i.MX8M SoCs
> > +            items:
> > +              - enum:
> > +                  - fsl,imx8mm-soc
> > +                  - fsl,imx8mn-soc
> > +                  - fsl,imx8mp-soc
> > +                  - fsl,imx8mq-soc
> > +              - const: simple-bus
> > +
> > +          - description: old version compatible for i.MX8M SoCs
> > +            items:
> > +              - const: simple-bus
> 
> Fix your dts files and drop this.

My changes are below.

> 
> > +
> > +allOf:
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - fsl,imx8mm
> > +              - fsl,imx8mn
> > +              - fsl,imx8mp
> > +              - fsl,imx8mq
> > +
> > +    then:
> > +      patternProperties:
> > +        "^soc@[0-9a-f]+$":
> 
> And this is just wrong. First you say the node is 'soc' and then here it has a unit
> address.

Here are my changes. I deleted the section from "soc:" to "- const: simple bus". Please help me to see if they are correct and workable. Thank you.
allOf:
  - if:
      properties:
        compatible:
          contains:
            enum:
              - fsl,imx8mm
              - fsl,imx8mn
              - fsl,imx8mp
              - fsl,imx8mq

    then:
      patternProperties:
        "^soc@[0-9a-f]+$":
          properties:
            compatible:
              items:
                - enum:
                    - fsl,imx8mm-soc
                    - fsl,imx8mn-soc
                    - fsl,imx8mp-soc
                    - fsl,imx8mq-soc
                - const: simple-bus

          required:
            - compatible
            - nvmem-cells
            - nvmem-cell-names

Best Regards,
Alice Guo

> 
> > +          properties:
> > +            compatible:
> > +              items:
> > +                - enum:
> > +                    - fsl,imx8mm-soc
> > +                    - fsl,imx8mn-soc
> > +                    - fsl,imx8mp-soc
> > +                    - fsl,imx8mq-soc
> > +                - const: simple-bus
> > +
> > +          required:
> > +            - compatible
> > +            - nvmem-cells
> > +            - nvmem-cell-names
> > +
> >  additionalProperties: true
> >
> >  ...
> > --
> > 2.17.1
> >
> 
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