linux-kernel - Re: [PATCH v3] dt-bindings: ata: Add UniPhier controller binding

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Date:   Mon, 20 Feb 2023 12:48:24 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Jens Axboe <axboe@...nel.dk>
Cc:     linux-ide@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] dt-bindings: ata: Add UniPhier controller binding

On 20/02/2023 06:47, Kunihiko Hayashi wrote:
> Add UniPhier SATA controller compatible string to the platform binding.
> This controller needs two or three reset controls.
> 
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
> ---
>  .../bindings/ata/ahci-platform.yaml           | 32 ++++++++++++++++---
>  1 file changed, 27 insertions(+), 5 deletions(-)
> 
> Changes since v2:
> - Add compatible strings to select property
> - Add minItems and change maxItems for resets
> - Move condition schema under allOf property
> - Change resets to "required" for uniphier-*-ahci
> 
> Changes since v1:
> - Restrict resets property changes with compatible strings
> - Fix maxItems from two to three
> 
> diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.yaml b/Documentation/devicetree/bindings/ata/ahci-platform.yaml
> index 7dc2a2e8f598..4b2ee68097b8 100644
> --- a/Documentation/devicetree/bindings/ata/ahci-platform.yaml
> +++ b/Documentation/devicetree/bindings/ata/ahci-platform.yaml
> @@ -30,12 +30,12 @@ select:
>            - marvell,armada-3700-ahci
>            - marvell,armada-8k-ahci
>            - marvell,berlin2q-ahci
> +          - socionext,uniphier-pro4-ahci
> +          - socionext,uniphier-pxs2-ahci
> +          - socionext,uniphier-pxs3-ahci
>    required:
>      - compatible
>  
> -allOf:
> -  - $ref: "ahci-common.yaml#"
> -
>  properties:
>    compatible:
>      oneOf:
> @@ -45,6 +45,9 @@ properties:
>                - marvell,armada-8k-ahci
>                - marvell,berlin2-ahci
>                - marvell,berlin2q-ahci
> +              - socionext,uniphier-pro4-ahci
> +              - socionext,uniphier-pxs2-ahci
> +              - socionext,uniphier-pxs3-ahci
>            - const: generic-ahci
>        - enum:
>            - cavium,octeon-7130-ahci
> @@ -67,14 +70,33 @@ properties:
>      minItems: 1
>      maxItems: 3
>  
> +  resets:
> +    minItems: 1
> +    maxItems: 3
> +
>    interrupts:
>      maxItems: 1
>  
>    power-domains:
>      maxItems: 1
>  
> -  resets:
> -    maxItems: 1

Why moving it?

> +allOf:

This goes to the same place as in example-schema.

> +  - $ref: ahci-common.yaml#
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - socionext,uniphier-pro4-ahci
> +              - socionext,uniphier-pxs2-ahci
> +              - socionext,uniphier-pxs3-ahci
> +    then:
> +      properties:
> +        resets:
> +          minItems: 2
> +          maxItems: 3

You need to describe the items, what's expected here.

> +      required:
> +        - resets

The entire point was to add:

else - maxItems: 1

>  
>  patternProperties:
>    "^sata-port@[0-9a-f]+$":

Best regards,
Krzysztof