linux-kernel - Re: [PATCH v4 05/17] dt-bindings: PCI: dwc: Stop selecting generic bindings by default

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Date:   Thu, 28 Jul 2022 16:37:18 -0600
From:   Rob Herring <robh@...nel.org>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        linux-kernel@...r.kernel.org, Richard Zhu <hongxing.zhu@....com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Palmer Dabbelt <palmer@...belt.com>,
        Frank Li <Frank.Li@....com>,
        Binghui Wang <wangbinghui@...ilicon.com>,
        linux-arm-kernel@...ts.infradead.org,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        devicetree@...r.kernel.org, NXP Linux Team <linux-imx@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Fabio Estevam <festevam@...il.com>,
        Serge Semin <fancer.lancer@...il.com>,
        Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>,
        linux-pci@...r.kernel.org, Greentime Hu <greentime.hu@...ive.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-riscv@...ts.infradead.org,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Lucas Stach <l.stach@...gutronix.de>,
        Xiaowei Song <songxiaowei@...ilicon.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Subject: Re: [PATCH v4 05/17] dt-bindings: PCI: dwc: Stop selecting generic bindings by default

On Thu, 28 Jul 2022 17:34:15 +0300, Serge Semin wrote:
> It's highly encouraged to have the separate DT schema for each available
> particular device, while the generic schema should be left untouched
> representing just a set of the common device properties (mainly advertised
> by the IP-core reference manual). Seeing there is no currently DW PCIe
> RP/EP dts nodes with only generic compatible string and since there isn't
> any vendor-specific compatible string added to the generic DT schema,
> before it's too late let's mark the snps,dw-pcie.yaml and
> snps,dw-pcie-ep.yaml schemas not selected for checking by default and add
> the explicit requirement to have the compatible string containing the
> generic device name.
> 
> Note due to this modification we need to switch some of the DW PCIe-based
> DT-bindings to referring to the common DT-schema instead of evaluating
> against the generic DW PCIe DT-bindings. They are already defined as
> having the vendor-specific compatible string only. So we can't change that
> semantic.
> 
> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> 
> ---
> 
> Changelog v3:
> - This is a new patch unpinned from the next one:
>   https://lore.kernel.org/linux-pci/20220503214638.1895-2-Sergey.Semin@baikalelectronics.ru/
>   by the Rob' request. (@Rob)
> - Fix compatible property schema so one would work as expected: string
>   must contain either generic DW PCIe IP-core name or both generic and
>   equipped with IP-core version names.
> ---
>  .../bindings/pci/fsl,imx6q-pcie.yaml          |  3 ++-
>  .../bindings/pci/hisilicon,kirin-pcie.yaml    |  3 ++-
>  .../bindings/pci/sifive,fu740-pcie.yaml       |  3 ++-
>  .../bindings/pci/snps,dw-pcie-ep.yaml         | 24 +++++++++++++++----
>  .../devicetree/bindings/pci/snps,dw-pcie.yaml | 24 +++++++++++++++----
>  .../pci/socionext,uniphier-pcie-ep.yaml       |  9 +++----
>  .../bindings/pci/toshiba,visconti-pcie.yaml   |  3 ++-
>  7 files changed, 53 insertions(+), 16 deletions(-)
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.example.dtb: pcie@...000000: Unevaluated properties are not allowed ('clocks', 'interrupts' were unexpected)
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/toshiba,visconti-pcie.example.dtb: pcie@...00000: Unevaluated properties are not allowed ('interrupt-names' was unexpected)
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/toshiba,visconti-pcie.yaml
Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.example.dtb:0:0: /example-0/pcie-ep@...00000: failed to match any schema with compatible: ['vendor,soc-pcie', 'snps,dw-pcie-ep']
Documentation/devicetree/bindings/pci/snps,dw-pcie.example.dtb:0:0: /example-0/pcie@...00000: failed to match any schema with compatible: ['vendor,soc-pcie', 'snps,dw-pcie']
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.example.dtb: pcie@...00000: compatible: 'anyOf' conditional failed, one must be fixed:
	['samsung,exynos5433-pcie'] does not contain items matching the given schema
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.example.dtb: pcie@...00000: Unevaluated properties are not allowed ('#address-cells', '#interrupt-cells', '#size-cells', 'bus-range', 'device_type', 'interrupt-map', 'interrupt-map-mask', 'ranges' were unexpected)
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie.example.dtb: pcie@...00000: compatible: 'anyOf' conditional failed, one must be fixed:
	['socionext,uniphier-pcie'] does not contain items matching the given schema
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie.example.dtb: pcie@...00000: Unevaluated properties are not allowed ('#address-cells', '#interrupt-cells', '#size-cells', 'bus-range', 'device_type', 'interrupt-map', 'interrupt-map-mask', 'interrupt-names', 'interrupts', 'ranges' were unexpected)
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.example.dtb: pcie@...00000: Unevaluated properties are not allowed ('interrupt-names', 'interrupts' were unexpected)
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.example.dtb: pcie@...00000: Unevaluated properties are not allowed ('interrupt-names', 'interrupts' were unexpected)
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.