Re: [PATCH 1/6] dt-bindings: loongarch: Add CPU bindings for LoongArch

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On 16/06/2023 08:10, Binbin Zhou wrote:
> Add the available CPUs in LoongArch binding with DT schema format using
> json-schema.
> 
> Signed-off-by: Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
> ---
>  .../devicetree/bindings/loongarch/cpus.yaml   | 65 +++++++++++++++++++
>  1 file changed, 65 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/loongarch/cpus.yaml
> 
> diff --git a/Documentation/devicetree/bindings/loongarch/cpus.yaml b/Documentation/devicetree/bindings/loongarch/cpus.yaml
> new file mode 100644
> index 000000000000..c3e2dba42c81
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/loongarch/cpus.yaml
> @@ -0,0 +1,65 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/loongarch/cpus.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: LoongArch CPUs
> +
> +maintainers:
> +  - Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
> +
> +description:
> +  The device tree allows to describe the layout of CPUs in a system through
> +  the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
> +  defining properties for every CPU.

I understand you copied it from ARM, but I would prefer to have here
something meaningful. Bindings description does not explain what is DTS,
but explains what the hardware is.

> +
> +properties:
> +  compatible:
> +    enum:
> +      - loongson,la264
> +      - loongson,la364
> +
> +  reg:
> +    maxItems: 1
> +
> +  device_type: true
> +
> +  clock-frequency:
> +    description: The frequency of cpu in Hz.
> +
> +  model:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description: User-visible cpu name in /proc/cpuinfo.

First, aren't you mixing nodes?
Second, it is derived from compatible, so no need for such property.

> +
> +required:
> +  - compatible
> +  - reg
> +  - clock-frequency
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    cpus {
> +        #size-cells = <0>;
> +        #address-cells = <1>;
> +
> +        model = "Loongson-2K1000";

Drop, not related.

Best regards,
Krzysztof




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