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Date: Wed, 10 Apr 2024 20:00:14 +0200
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Subject: Re: [PATCH 3/3] dt-bindings: PCI: host-bridges: switch from
 deprecated pci-bus.yaml
To: Rob Herring <robh@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
 Lorenzo Pieralisi <lpieralisi@kernel.org>,
 =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= <kw@linux.com>,
 Krzysztof Kozlowski <krzk+dt@kernel.org>, Conor Dooley
 <conor+dt@kernel.org>, Hector Martin <marcan@marcan.st>,
 Sven Peter <sven@svenpeter.dev>, Alyssa Rosenzweig <alyssa@rosenzweig.io>,
 Ray Jui <rjui@broadcom.com>, Scott Branden <sbranden@broadcom.com>,
 Broadcom internal kernel review list
 <bcm-kernel-feedback-list@broadcom.com>, Jim Quinlan <jim2101024@gmail.com>,
 Nicolas Saenz Julienne <nsaenz@kernel.org>,
 Florian Fainelli <florian.fainelli@broadcom.com>,
 Will Deacon <will@kernel.org>, Linus Walleij <linus.walleij@linaro.org>,
 Srikanth Thokala <srikanth.thokala@intel.com>,
 Ryder Lee <ryder.lee@mediatek.com>, Jianjun Wang
 <jianjun.wang@mediatek.com>,
 Sergio Paracuellos <sergio.paracuellos@gmail.com>,
 Matthias Brugger <matthias.bgg@gmail.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>,
 Daire McNamara <daire.mcnamara@microchip.com>,
 Bjorn Andersson <andersson@kernel.org>,
 Konrad Dybcio <konrad.dybcio@linaro.org>,
 Marek Vasut <marek.vasut+renesas@gmail.com>,
 Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
 Shawn Lin <shawn.lin@rock-chips.com>, Heiko Stuebner <heiko@sntech.de>,
 Jingoo Han <jingoohan1@gmail.com>,
 Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
 Bharat Kumar Gogada <bharat.kumar.gogada@amd.com>,
 Michal Simek <michal.simek@amd.com>,
 Geert Uytterhoeven <geert+renesas@glider.be>,
 Magnus Damm <magnus.damm@gmail.com>,
 Neil Armstrong <neil.armstrong@linaro.org>,
 Mark Kettenis <kettenis@openbsd.org>, Tom Joseph <tjoseph@cadence.com>,
 Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com>,
 Jiaxun Yang <jiaxun.yang@flygoat.com>,
 Kishon Vijay Abraham I <kishon@kernel.org>,
 Thippeswamy Havalige <thippeswamy.havalige@amd.com>,
 linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org, asahi@lists.linux.dev,
 linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org,
 linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org,
 linux-renesas-soc@vger.kernel.org, linux-rockchip@lists.infradead.org
References: <20240407102000.37213-1-krzysztof.kozlowski@linaro.org>
 <20240407102000.37213-3-krzysztof.kozlowski@linaro.org>
 <20240410174806.GA788199-robh@kernel.org>
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From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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In-Reply-To: <20240410174806.GA788199-robh@kernel.org>
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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@linaro.org>
>> ---
>>  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.

Best regards,
Krzysztof