linux-kernel - Re: [PATCH V2] dt-bindings: pci: convert QCOM pci bindings to YAML

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Date:   Tue, 28 Jul 2020 09:54:00 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Sivaprakash Murugesan <sivaprak@....qualcomm.com>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Sivaprakash Murugesan <sivaprak@...eaurora.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        PCI <linux-pci@...r.kernel.org>, devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2] dt-bindings: pci: convert QCOM pci bindings to YAML

On Tue, Jul 28, 2020 at 9:27 AM Rob Herring <robh+dt@...nel.org> wrote:
>
> On Sun, Jul 26, 2020 at 9:07 AM Sivaprakash Murugesan
> <sivaprak@....qualcomm.com> wrote:
> >
> > From: Sivaprakash Murugesan <sivaprak@...eaurora.org>
> >
> > Convert QCOM pci bindings to YAML schema
> >
> > Signed-off-by: Sivaprakash Murugesan <sivaprak@...eaurora.org>
> > ---
> > [v2]
> >   - Referenced pci-bus.yaml
> >   - removed duplicate properties already referenced by pci-bus.yaml
> >   - Addressed comments from Rob
> >  .../devicetree/bindings/pci/qcom,pcie.txt          | 330 ---------------
> >  .../devicetree/bindings/pci/qcom,pcie.yaml         | 447 +++++++++++++++++++++
> >  2 files changed, 447 insertions(+), 330 deletions(-)
> >  delete mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt
> >  create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.yaml
>
>
> > diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > new file mode 100644
> > index 000000000000..ddb84f49ac1c
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> > @@ -0,0 +1,447 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +
> > +%YAML 1.2
> > +---
> > +$id: "http://devicetree.org/schemas/pci/qcom,pcie.yaml#"
> > +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> > +
> > +title: Qualcomm PCI express root complex
> > +
> > +maintainers:
> > +  - Sivaprakash Murugesan <sivaprak@...eaurora.org>
> > +
> > +description:
> > +  QCOM PCIe controller uses Designware IP with Qualcomm specific hardware
> > +  wrappers.
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - qcom,pcie-apq8064
> > +      - qcom,pcie-apq8084
> > +      - qcom,pcie-ipq4019
> > +      - qcom,pcie-ipq8064
> > +      - qcom,pcie-ipq8074
> > +      - qcom,pcie-msm8996
> > +      - qcom,pcie-qcs404
> > +      - qcom,pcie-sdm845
> > +
> > +  reg:
> > +    description: Register ranges as listed in the reg-names property
>
> Can drop this.
>
> > +    maxItems: 4
> > +
> > +  reg-names:
> > +    items:
> > +      - const: dbi
> > +      - const: elbi
> > +      - const: parf
> > +      - const: config
> > +
> > +  ranges:
> > +    maxItems: 2
> > +
> > +  interrupts:
> > +    items:
> > +      - description: MSI interrupts
> > +
> > +  interrupt-names:
> > +    const: msi
> > +
> > +  "#interrupt-cells":
>
> In pci-bus.yaml, so you can drop.
>
> > +    const: 1
> > +
> > +  interrupt-map-mask:
>
> In pci-bus.yaml, so you can drop.

Actually, you'll need to do 'interrupt-map-mask: true' on these.

>
> > +    items:
> > +      - description: standard PCI properties to define mapping of PCIe
> > +                     interface to interrupt numbers.
> > +
> > +  interrupt-map:
> > +    maxItems: 4
> > +
> > +  clocks:
> > +    minItems: 1
> > +    maxItems: 7
> > +
> > +  clock-names:
> > +    minItems: 1
> > +    maxItems: 7
> > +
> > +  resets:
> > +    minItems: 1
> > +    maxItems: 12
> > +
> > +  reset-names:
> > +    minItems: 1
> > +    maxItems: 12
> > +
> > +  power-domains:
> > +    maxItems: 1
> > +
> > +  vdda-supply:
> > +    description: phandle to power supply
> > +
> > +  vdda_phy-supply:
> > +    description: phandle to the power supply to PHY
> > +
> > +  vdda_refclk-supply:
> > +    description: phandle to power supply for ref clock generator
> > +
> > +  vddpe-3v3-supply:
> > +    description: PCIe endpoint power supply
> > +
> > +  phys:
> > +    maxItems: 1
> > +    items:
> > +      - description: phandle to the PHY block
>
> Can drop 'items'.
>
> With those fixed,
>
> Reviewed-by: Rob Herring <robh@...nel.org>