linux-kernel - Re: [PATCH v3 1/2] dt-bindings: PCI: xilinx-cpm: Add Versal CPM5 Root Port

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Message-ID: <6f34f80e-da06-337d-167e-2410309e0f4d@canonical.com>
Date:   Thu, 10 Mar 2022 14:24:45 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     lorenzo.pieralisi@....com, bhelgaas@...gle.com, michals@...inx.com,
        robh@...nel.org
Subject: Re: [PATCH v3 1/2] dt-bindings: PCI: xilinx-cpm: Add Versal CPM5 Root
 Port

On 09/03/2022 13:00, Bharat Kumar Gogada wrote:
> Xilinx Versal Premium series has CPM5 block which supports Root Port
> functioning at Gen5 speed.
> 
> Add support for YAML schemas documentation for Versal CPM5 Root Port driver.
> 
> Signed-off-by: Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>
> ---
>  .../bindings/pci/xilinx-versal-cpm.yaml       | 47 ++++++++++++++++---
>  1 file changed, 40 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
> index 32f4641085bc..97c7229d7f91 100644
> --- a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
> +++ b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
> @@ -14,17 +14,21 @@ allOf:
>  
>  properties:
>    compatible:
> -    const: xlnx,versal-cpm-host-1.00
> +    contains:
> +      enum:
> +        - xlnx,versal-cpm-host-1.00
> +        - xlnx,versal-cpm5-host-1.00
>  
>    reg:
> -    items:
> -      - description: Configuration space region and bridge registers.
> -      - description: CPM system level control and status registers.
> +    description: |
> +      Should contain cpm_slcr, cfg registers location and length.
> +      For xlnx,versal-cpm5-host-1.00, it should also contain cpm_csr.
> +    minItems: 2
> +    maxItems: 3

You removed here list of items, which should stay. See also
https://elixir.bootlin.com/linux/latest/source/Documentation/devicetree/bindings/example-schema.yaml#L91
how to do it.

>  
>    reg-names:
> -    items:
> -      - const: cfg
> -      - const: cpm_slcr
> +    minItems: 2
> +    maxItems: 3

The same.


Best regards,
Krzysztof