Re: [PATCH v2 2/4] dt-bindings: soc: sophgo: Add Sophgo syscon module

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

On 27/11/2023 01:58, Chen Wang wrote:
> From: Chen Wang <unicorn_wang@outlook.com>
> 
> Add documentation to describe Sophgo System Controller Registers for
> SG2042.
> 
> Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
> ---
>  .../soc/sophgo/sophgo,sg2042-syscon.yaml      | 58 +++++++++++++++++++
>  1 file changed, 58 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-syscon.yaml
> 
> diff --git a/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-syscon.yaml b/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-syscon.yaml
> new file mode 100644
> index 000000000000..329d645091b4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/sophgo/sophgo,sg2042-syscon.yaml
> @@ -0,0 +1,58 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/sophgo/sophgo,sg2042-syscon.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sophgo SG2042 SoC system controller
> +
> +maintainers:
> +  - Chen Wang <unicorn_wang@outlook.com>
> +
> +description:
> +  The Sophgo SG2042 SoC system controller provides register information such
> +  as offset, mask and shift to configure some modules, such as clocks, reset
> +  signals and pinctrl.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - sophgo,sg2042-syscon
> +      - const: syscon
> +
> +  reg:
> +    maxItems: 1
> +
> +  clock-controller:
> +    # Child node
> +    type: object
> +    $ref: ../../clock/sophgo/sophgo,sg2042-clkgen.yaml

Use full path, so /schemas/clock/
(look at other bindings how they do it)

> +    description:
> +      Clock controller for the SoC clocks. This child node definition
> +      should follow the bindings specified in
> +      Documentation/devicetree/bindings/clock/sophgo/sophgo,sg2042-clkgen.yaml

Drop description.

> +
> +required:
> +  - compatible
> +  - reg

clock-controller, no?

> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    syscon@30010000 {
> +        compatible = "sophgo,sg2042-syscon", "syscon";
> +        reg = <0x30010000 0x1000>;
> +    };
> +
> +    syscon@30020000 {
> +        compatible = "sophgo,sg2042-syscon", "syscon";

Wait, these are two different devices. Why do you use the same
compatible for them? Is their register layout exactly the same?

Best regards,
Krzysztof