linux-kernel - Re: [PATCH] spi: dt-bindings: cdns,qspi-nor: Update minItems/maxItems of resets for Cadence OSPI controller

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Message-ID: <8936844a-c6a0-4107-bb6d-f67a32b13eff@kernel.org>
Date: Wed, 26 Mar 2025 13:21:17 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Amit Kumar Mahapatra <amit.kumar-mahapatra@....com>, broonie@...nel.org,
 robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org
Cc: linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, git@....com, amitrkcian2002@...il.com
Subject: Re: [PATCH] spi: dt-bindings: cdns,qspi-nor: Update minItems/maxItems
 of resets for Cadence OSPI controller

On 26/03/2025 12:37, Amit Kumar Mahapatra wrote:
> The Cadence Octal SPI (OSPI) controller on AMD Versal SoCs requires only
> one reset entry. To reflect this, the maxItems for "resets" and
> "reset-names" has been set to 1 for AMD Versal SoCs, and the minItems for
> these properties has also been updated to 1. Additionally, these properties
> have been added to the required property list for Versal SoCs.
> 
> Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@....com>
> ---
> BRANCH: mtd/next
> ---
>  .../devicetree/bindings/spi/cdns,qspi-nor.yaml     | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml b/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
> index d48ecd6cd5ad..cc94c59280a1 100644
> --- a/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
> +++ b/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
> @@ -17,8 +17,18 @@ allOf:
>            contains:
>              const: xlnx,versal-ospi-1.0
>      then:
> +      properties:
> +        resets:
> +          maxItems: 1
> +
> +        reset-names:
> +          maxItems: 1
> +          items:
> +            enum: [ qspi ]

Just list the items instead of these three lines.

>        required:
>          - power-domains
> +        - resets
> +        - reset-names

Why? That's an ABI break.


>    - if:
>        properties:
>          compatible:
> @@ -132,11 +142,11 @@ properties:
>      maxItems: 1
>  
>    resets:
> -    minItems: 2
> +    minItems: 1

You need to update other variants now.

Best regards,
Krzysztof