linux-kernel - Re: [PATCH v4 5/7] dt-bindings: soc: starfive: Add StarFive syscon module

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Message-ID: <2fb8c88a-dab5-791b-eefe-c983decad5e8@linaro.org>
Date:   Fri, 12 May 2023 08:35:43 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Xingyu Wu <xingyu.wu@...rfivetech.com>,
        linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Conor Dooley <conor@...nel.org>,
        Emil Renner Berthing <kernel@...il.dk>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Hal Feng <hal.feng@...rfivetech.com>,
        William Qiu <william.qiu@...rfivetech.com>,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH v4 5/7] dt-bindings: soc: starfive: Add StarFive syscon
 module

On 12/05/2023 04:20, Xingyu Wu wrote:
> From: William Qiu <william.qiu@...rfivetech.com>
> 
> Add documentation to describe StarFive System Controller Registers.
> 
> Co-developed-by: Xingyu Wu <xingyu.wu@...rfivetech.com>
> Signed-off-by: Xingyu Wu <xingyu.wu@...rfivetech.com>
> Reviewed-by: Rob Herring <robh@...nel.org>

You made significant changes. Explain them in changelog here and drop
the tag.

> Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
> ---
>  .../soc/starfive/starfive,jh7110-syscon.yaml  | 67 +++++++++++++++++++
>  MAINTAINERS                                   |  7 ++
>  2 files changed, 74 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml
> 
> diff --git a/Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml b/Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml
> new file mode 100644
> index 000000000000..26dc99cb0c89
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/starfive/starfive,jh7110-syscon.yaml
> @@ -0,0 +1,67 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/starfive/starfive,jh7110-syscon.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: StarFive JH7110 SoC system controller
> +
> +maintainers:
> +  - William Qiu <william.qiu@...rfivetech.com>
> +
> +description: |
> +  The StarFive JH7110 SoC system controller provides register information such
> +  as offset, mask and shift to configure related modules such as MMC and PCIe.
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - items:
> +          - const: starfive,jh7110-sys-syscon
> +          - const: syscon
> +          - const: simple-mfd
> +      - items:
> +          - enum:
> +              - starfive,jh7110-aon-syscon
> +              - starfive,jh7110-stg-syscon
> +          - const: syscon
> +
> +  reg:
> +    maxItems: 1
> +
> +  clock-controller:
> +    $ref: /schemas/clock/starfive,jh7110-pll.yaml#
> +    type: object
> +
> +  "#power-domain-cells":
> +    const: 1

Add it to the existing examples.

This part confuses me... why aon appeared here?  Why power-controller
disappeared? I don't think that Rob or me proposed any of this.

> +
> +required:
> +  - compatible
> +  - reg
> +
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: starfive,jh7110-aon-syscon
> +    then:
> +      required:
> +        - "#power-domain-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    syscon@...40000 {
> +        compatible = "starfive,jh7110-stg-syscon", "syscon";
> +        reg = <0x10240000 0x1000>;
> +    };
> +
> +    syscon@...30000 {
> +        compatible = "starfive,jh7110-sys-syscon", "syscon", "simple-mfd";
> +        reg = <0x13030000 0x1000>;

Why simple-mfd? You do not have any children here.



Best regards,
Krzysztof