linux-kernel - Re: [PATCH v2 08/16] dt-bindings: soc: socionext: Add UniPhier system controller

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Date:   Thu, 8 Dec 2022 09:15:24 +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 08/16] dt-bindings: soc: socionext: Add UniPhier system
 controller

On 07/12/2022 06:53, Kunihiko Hayashi wrote:
> Add devicetree binding schema for the system controller implemented on
> Socionext Uniphier SoCs.
> 
> This system controller has multiple functions such as clock control,
> reset control, internal watchdog timer, thermal management, and so on.
> 
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
> ---
>  .../socionext/socionext,uniphier-sysctrl.yaml | 105 ++++++++++++++++++
>  MAINTAINERS                                   |   1 +
>  2 files changed, 106 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-sysctrl.yaml
> 
> diff --git a/Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-sysctrl.yaml b/Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-sysctrl.yaml
> new file mode 100644
> index 000000000000..c1b7cec8def4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/socionext/socionext,uniphier-sysctrl.yaml
> @@ -0,0 +1,105 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/socionext/socionext,uniphier-sysctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Socionext UniPhier system controller
> +
> +maintainers:
> +  - Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
> +
> +description: |+
> +  System controller implemented on Socionext UniPhier SoCs has multiple
> +  functions such as clock control, reset control, internal watchdog timer,
> +  thermal management, and so on.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - socionext,uniphier-ld4-sysctrl
> +          - socionext,uniphier-pro4-sysctrl
> +          - socionext,uniphier-pro5-sysctrl
> +          - socionext,uniphier-pxs2-sysctrl
> +          - socionext,uniphier-sld8-sysctrl
> +          - socionext,uniphier-ld11-sysctrl
> +          - socionext,uniphier-ld20-sysctrl
> +          - socionext,uniphier-pxs3-sysctrl
> +          - socionext,uniphier-nx1-sysctrl
> +      - const: simple-mfd
> +      - const: syscon
> +
> +  reg:
> +    maxItems: 1
> +
> +patternProperties:
> +  "^clock-controller(@[0-9a-f]+)?$":

I don't remember if we talked about this but: why do you include here
unit address? All your bindings expect these take regmap from the parent
and they do not have separate MMIO address space, so these should be
properties, not pattern properties.

Same in places below.

> +    $ref: /schemas/clock/socionext,uniphier-clock.yaml#
> +
> +  "^reset-controller(@[0-9a-f]+)?$":
> +    $ref: /schemas/reset/socionext,uniphier-reset.yaml#
> +
> +  "^watchdog(@[0-9a-f]+)?$":
> +    $ref: /schemas/watchdog/socionext,uniphier-wdt.yaml#
> +
> +  "^thermal-sensor(@[0-9a-f]+)?$":
> +    $ref: /schemas/thermal/socionext,uniphier-thermal.yaml#
> +
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: socionext,uniphier-ld4-sysctrl
> +    then:
> +      patternProperties:
> +        "^watchdog(@[0-9a-f]+)?$": false
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - socionext,uniphier-ld4-sysctrl
> +              - socionext,uniphier-pro4-sysctrl
> +              - socionext,uniphier-sld8-sysctrl
> +              - socionext,uniphier-ld11-sysctrl
> +    then:
> +      patternProperties:
> +        "^thermal-sensor(@[0-9a-f]+)?$": false
> +
> +additionalProperties: false
> +
> +required:
> +  - compatible
> +  - reg
> +

Best regards,
Krzysztof