linux-kernel - Re: [PATCH v1 1/9] dt-bindings: PCI: Add PLDA XpressRICH PCIe host common properties

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Message-ID: <20230719223124.GB882340-robh@kernel.org>
Date:   Wed, 19 Jul 2023 16:31:24 -0600
From:   Rob Herring <robh@...nel.org>
To:     Minda Chen <minda.chen@...rfivetech.com>
Cc:     Daire McNamara <daire.mcnamara@...rochip.com>,
        Conor Dooley <conor@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Emil Renner Berthing <emil.renner.berthing@...onical.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-pci@...r.kernel.org,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mason Huo <mason.huo@...rfivetech.com>,
        Leyfoon Tan <leyfoon.tan@...rfivetech.com>,
        Kevin Xie <kevin.xie@...rfivetech.com>
Subject: Re: [PATCH v1 1/9] dt-bindings: PCI: Add PLDA XpressRICH PCIe host
 common properties

On Wed, Jul 19, 2023 at 06:20:49PM +0800, Minda Chen wrote:
> Add PLDA XpressRICH PCIe host common properties dt-binding doc.
> Microchip PolarFire PCIe host using PLDA IP.
> Extract properties from Microchip PolarFire PCIe host.
> 
> Signed-off-by: Minda Chen <minda.chen@...rfivetech.com>
> Reviewed-by: Hal Feng <hal.feng@...rfivetech.com>
> ---
>  .../pci/plda,xpressrich-pcie-common.yaml      | 72 +++++++++++++++++++
>  1 file changed, 72 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pci/plda,xpressrich-pcie-common.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pci/plda,xpressrich-pcie-common.yaml b/Documentation/devicetree/bindings/pci/plda,xpressrich-pcie-common.yaml
> new file mode 100644
> index 000000000000..3627a846c5d1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pci/plda,xpressrich-pcie-common.yaml
> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pci/plda,xpressrich-pcie-common.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: PLDA XpressRICH PCIe host common properties
> +
> +maintainers:
> +  - Daire McNamara <daire.mcnamara@...rochip.com>
> +  - Minda Chen <minda.chen@...rfivetech.com>
> +
> +description:
> +  Generic PLDA XpressRICH PCIe host common properties.
> +
> +select: false
> +
> +properties:
> +  reg:
> +    description:
> +      At least host IP register set and configuration space are
> +      required for normal controller work.
> +    maxItems: 2
> +
> +  reg-names:
> +    oneOf:
> +      - items:
> +          - const: cfg
> +          - const: apb
> +      - items:
> +          - const: host
> +          - const: cfg

This didn't exist before. Where's the reasoning?

There's no reason for 'cfg' to be in different spots and little reason 
to have different names for the host/apb space.

Rob