linux-kernel - Re: [PATCH v2 16/16] dt-bindings: soc: socionext: Add UniPhier AHCI glue layer

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Date:   Thu, 8 Dec 2022 09:24:47 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Masami Hiramatsu <mhiramat@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 16/16] dt-bindings: soc: socionext: Add UniPhier AHCI
 glue layer

On 07/12/2022 06:54, Kunihiko Hayashi wrote:
> Add DT binding schema for components belonging to the platform-specific
> AHCI glue layer implemented in UniPhier SoCs.
> 
> This AHCI glue layer works as a sideband logic for the host controller,
> including core reset, PHYs, and some signals to the controller.
> 
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
> ---
>  .../socionext,uniphier-ahci-glue.yaml         | 78 +++++++++++++++++++
>  1 file changed, 78 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-ahci-glue.yaml
> 
> diff --git a/Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-ahci-glue.yaml b/Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-ahci-glue.yaml
> new file mode 100644
> index 000000000000..bf37be8a778d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-ahci-glue.yaml
> @@ -0,0 +1,78 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/socionext/socionext,uniphier-ahci-glue.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Socionext UniPhier SoC AHCI glue layer
> +
> +maintainers:
> +  - Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
> +
> +description: |+
> +  AHCI glue layer implemented on Socionext UniPhier SoCs is a sideband
> +  logic handling signals to AHCI host controller inside AHCI component.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - socionext,uniphier-pro4-ahci-glue
> +          - socionext,uniphier-pxs2-ahci-glue
> +          - socionext,uniphier-pxs3-ahci-glue
> +      - const: simple-mfd
> +
> +  reg:
> +    maxItems: 1
> +
> +  '#address-cells':

use consistent quotes

> +    const: 1
> +
> +  '#size-cells':
> +    const: 1
> +
> +  ranges: true
> +
> +patternProperties:
> +  "^reset-controller@[0-9a-f]+$":
> +    $ref: /schemas/reset/socionext,uniphier-glue-reset.yaml#
> +
> +  "phy@[0-9a-f]+$":
> +    $ref: /schemas/phy/socionext,uniphier-ahci-phy.yaml#
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties:
> +  type: object

What is the additional object? It's not in your example, not in DTS. Why
do you need to allow it?

Best regards,
Krzysztof