linux-kernel - Re: [PATCH 3/5] dt-bindings: Document Loongson PCI Host Controller

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Date:   Mon, 30 Mar 2020 18:40:43 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>, linux-mips@...r.kernel.org
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhc@...ote.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Andrew Murray <amurray@...goodpenguin.co.uk>,
        Paul Burton <paulburton@...nel.org>, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] dt-bindings: Document Loongson PCI Host Controller

On 03/30/2020 02:42 PM, Jiaxun Yang wrote:

> PCI host controller found on Loongson PCHs and SoCs.
> 
> Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
> ---
>  .../devicetree/bindings/pci/loongson.yaml     | 52 +++++++++++++++++++
>  1 file changed, 52 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pci/loongson.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pci/loongson.yaml b/Documentation/devicetree/bindings/pci/loongson.yaml
> new file mode 100644
> index 000000000000..623847980189
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/loongson.yaml
> @@ -0,0 +1,52 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pci/loongson.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Loongson PCI Host Controller
> +
> +maintainers:
> +  - Jiaxun Yang <jiaxun.yang@...goat.com>
> +
> +description: |+
> +  PCI host controller found on Loongson PCHs and SoCs.
> +
> +allOf:
> +  - $ref: /schemas/pci/pci-bus.yaml#
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: loongson,rs780e-pci
> +      - const: loongson,ls7a-pci
> +      - const: loongson,ls2k-pci
> +
> +  reg:
> +    minItems: 1
> +    maxItems: 2
> +    items:
> +      - description: CFG0 standard config space register
> +      - description: CFG1 extend config space register

   Extended?

> +
> +  ranges:
> +    maxItems: 3
> +
> +
> +required:
> +  - compatible
> +  - reg
> +  - ranges
> +
> +examples:
> +  - |
> +    pci@...00000 {
> +      compatible = "loongson,rs780e-pci";
> +      device_type = "pci";
> +      #address-cells = <3>;
> +      #size-cells = <2>;
> +
> +      reg = <0x1a000000 0x2000000>;
> +      ranges = <0x02000000 0 0x40000000 0x40000000 0 0x40000000>;
> +    };
> +...

MBR, Sergei