Re: [PATCH 3/3] dt-bindings: PCI: host-bridges: switch from deprecated pci-bus.yaml

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On Wed, Apr 10, 2024 at 1:00 PM Krzysztof Kozlowski
<krzysztof.kozlowski@xxxxxxxxxx> wrote:
>
> On 10/04/2024 19:48, Rob Herring wrote:
> > On Sun, Apr 07, 2024 at 12:20:00PM +0200, Krzysztof Kozlowski wrote:
> >> dtschema package with core schemas deprecated pci-bus.yaml schema in
> >> favor of pci-host-bridge.yaml.  Update all bindings to use the latter
> >> one.
> >>
> >> The difference between pci-bus.yaml and pci-host-bridge.yaml is only in
> >> lack of "reg" property defined by the latter, which should not have any
> >> effect here, because all these bindings define the "reg".
> >>
> >> The change is therefore quite trivial, except mediatek,mt7621-pcie.yaml
> >> binding which have children nodes being also host bridges, apparently.
> >>
> >> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> >> ---
> >>  Documentation/devicetree/bindings/pci/amlogic,axg-pcie.yaml   | 2 +-
> >>  Documentation/devicetree/bindings/pci/apple,pcie.yaml         | 2 +-
> >>  Documentation/devicetree/bindings/pci/brcm,iproc-pcie.yaml    | 2 +-
> >>  Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml      | 2 +-
> >>  Documentation/devicetree/bindings/pci/cdns-pcie-host.yaml     | 2 +-
> >>  Documentation/devicetree/bindings/pci/faraday,ftpci100.yaml   | 2 +-
> >>  Documentation/devicetree/bindings/pci/host-generic-pci.yaml   | 2 +-
> >>  Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml   | 2 +-
> >>  Documentation/devicetree/bindings/pci/intel,keembay-pcie.yaml | 2 +-
> >>  Documentation/devicetree/bindings/pci/loongson.yaml           | 2 +-
> >>  .../devicetree/bindings/pci/mediatek,mt7621-pcie.yaml         | 4 ++--
> >>  Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml | 2 +-
> >>  .../devicetree/bindings/pci/microchip,pcie-host.yaml          | 2 +-
> >>  Documentation/devicetree/bindings/pci/qcom,pcie-common.yaml   | 2 +-
> >>  Documentation/devicetree/bindings/pci/qcom,pcie.yaml          | 2 +-
> >>  Documentation/devicetree/bindings/pci/rcar-pci-host.yaml      | 2 +-
> >>  .../devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml        | 2 +-
> >>  .../devicetree/bindings/pci/rockchip,rk3399-pcie.yaml         | 2 +-
> >>  Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml       | 2 +-
> >>  Documentation/devicetree/bindings/pci/ti,am65-pci-host.yaml   | 2 +-
> >>  Documentation/devicetree/bindings/pci/versatile.yaml          | 2 +-
> >>  Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml  | 2 +-
> >>  Documentation/devicetree/bindings/pci/xlnx,axi-pcie-host.yaml | 2 +-
> >>  Documentation/devicetree/bindings/pci/xlnx,nwl-pcie.yaml      | 2 +-
> >>  Documentation/devicetree/bindings/pci/xlnx,xdma-host.yaml     | 2 +-
> >>  25 files changed, 26 insertions(+), 26 deletions(-)
> >
> >
> >> diff --git a/Documentation/devicetree/bindings/pci/mediatek,mt7621-pcie.yaml b/Documentation/devicetree/bindings/pci/mediatek,mt7621-pcie.yaml
> >> index 61d027239910..5bbb4a3f3dbd 100644
> >> --- a/Documentation/devicetree/bindings/pci/mediatek,mt7621-pcie.yaml
> >> +++ b/Documentation/devicetree/bindings/pci/mediatek,mt7621-pcie.yaml
> >> @@ -14,7 +14,7 @@ description: |+
> >>    with 3 Root Ports. Each Root Port supports a Gen1 1-lane Link
> >>
> >>  allOf:
> >> -  - $ref: /schemas/pci/pci-bus.yaml#
> >> +  - $ref: /schemas/pci/pci-host-bridge.yaml#
> >>
> >>  properties:
> >>    compatible:
> >> @@ -33,7 +33,7 @@ properties:
> >>  patternProperties:
> >>    '^pcie@[0-2],0$':
> >>      type: object
> >> -    $ref: /schemas/pci/pci-bus.yaml#
> >> +    $ref: /schemas/pci/pci-host-bridge.yaml#
> >
> > I think this one should be pci-pci-bridge.yaml instead since it says
> > these are root ports and based on the unit-address here.
>
> I was thinking about this as well, but pci-pci-bridge.yaml defines
> compatible which is not present here at all. Since you suggest pci-pci,
> I'll go with this and make it a separate patch for easier review.

This was my concern at first. It does define compatible, but it
doesn't require it. So I think we are fine.

Rob





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