linux-kernel - Re: [PATCH v4] dt-bindings: ata: Add UniPhier controller binding

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Date:   Mon, 6 Mar 2023 10:22:41 +0900
From:   Damien Le Moal <damien.lemoal@...nsource.wdc.com>
To:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.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 v4] dt-bindings: ata: Add UniPhier controller binding

On 2/23/23 00:59, Kunihiko Hayashi wrote:
> Add UniPhier SATA controller compatible string to the platform binding.
> This controller needs three reset controls for Pro4 SoC, or two reset
> controls for PXs2 and PXs3 SoCs.
> 
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>

Rob,

Are you OK with this patch ? I can take it for 6.4.

> ---
>  .../bindings/ata/ahci-platform.yaml           | 49 +++++++++++++++++--
>  1 file changed, 45 insertions(+), 4 deletions(-)
> 
> Changes since v3:
> - Fix the position of resets and allOf properties
> - Add reset descriptions
> - Separate if conditions for two resets, three resets, and others
> 
> 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..358617115bb8 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:
> -  - $ref: "ahci-common.yaml#"
> -
>  properties:
>    compatible:
>      oneOf:
> @@ -45,6 +45,9 @@ properties:
>                - marvell,armada-8k-ahci
>                - marvell,berlin2-ahci
>                - marvell,berlin2q-ahci
> +              - socionext,uniphier-pro4-ahci
> +              - socionext,uniphier-pxs2-ahci
> +              - socionext,uniphier-pxs3-ahci
>            - const: generic-ahci
>        - enum:
>            - cavium,octeon-7130-ahci
> @@ -74,7 +77,8 @@ properties:
>      maxItems: 1
>  
>    resets:
> -    maxItems: 1
> +    minItems: 1
> +    maxItems: 3
>  
>  patternProperties:
>    "^sata-port@[0-9a-f]+$":
> @@ -91,6 +95,43 @@ required:
>    - reg
>    - interrupts
>  
> +allOf:
> +  - $ref: ahci-common.yaml#
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: socionext,uniphier-pro4-ahci
> +    then:
> +      properties:
> +        resets:
> +          items:
> +            - description: reset line for the parent
> +            - description: reset line for the glue logic
> +            - description: reset line for the controller
> +      required:
> +        - resets
> +    else:
> +      if:
> +        properties:
> +          compatible:
> +            contains:
> +              enum:
> +                - socionext,uniphier-pxs2-ahci
> +                - socionext,uniphier-pxs3-ahci
> +      then:
> +        properties:
> +          resets:
> +            items:
> +              - description: reset for the glue logic
> +              - description: reset for the controller
> +        required:
> +          - resets
> +      else:
> +        properties:
> +          resets:
> +            maxItems: 1
> +
>  unevaluatedProperties: false
>  
>  examples:

-- 
Damien Le Moal
Western Digital Research