Re: [PATCH v3 4/7] dt-bindings: clock: mediatek: Add clock driver bindings for MT6795

[Krzysztof Kozlowski]

On 24/06/2022 11:35, AngeloGioacchino Del Regno wrote:
> Add the bindings for the clock drivers of the MediaTek Helio X10
> MT6795 SoC.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
> ---
>  .../bindings/clock/mediatek,mt6795-clock.yaml | 66 +++++++++++++++++
>  .../clock/mediatek,mt6795-sys-clock.yaml      | 74 +++++++++++++++++++
>  2 files changed, 140 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/mediatek,mt6795-clock.yaml
>  create mode 100644 Documentation/devicetree/bindings/clock/mediatek,mt6795-sys-clock.yaml
> 
> diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt6795-clock.yaml b/Documentation/devicetree/bindings/clock/mediatek,mt6795-clock.yaml
> new file mode 100644
> index 000000000000..795fb18721c3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/mediatek,mt6795-clock.yaml
> @@ -0,0 +1,66 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/clock/mediatek,mt6795-clock.yaml#";
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#";
> +
> +title: MediaTek Functional Clock Controller for MT6795
> +
> +maintainers:
> +  - AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
> +  - Chun-Jie Chen <chun-jie.chen@xxxxxxxxxxxx>
> +
> +description: |
> +  The clock architecture in MediaTek like below
> +  PLLs -->
> +          dividers -->
> +                      muxes
> +                           -->
> +                              clock gate
> +
> +  The devices provide clock gate control in different IP blocks.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt6795-mfgcfg
> +      - mediatek,mt6795-vdecsys
> +      - mediatek,mt6795-vencsys
> +
> +  reg:
> +    maxItems: 1
> +
> +  '#clock-cells':
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - '#clock-cells'
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        mfgcfg: clock-controller@13000000 {
> +            compatible = "mediatek,mt6795-mfgcfg";
> +            reg = <0 0x13000000 0 0x1000>;
> +            #clock-cells = <1>;
> +        };
> +
> +        vdecsys: clock-controller@16000000 {
> +            compatible = "mediatek,mt6795-vdecsys";
> +            reg = <0 0x16000000 0 0x1000>;
> +            #clock-cells = <1>;
> +        };
> +
> +        vencsys: clock-controller@18000000 {
> +            compatible = "mediatek,mt6795-vencsys";
> +            reg = <0 0x18000000 0 0x1000>;
> +            #clock-cells = <1>;
> +        };
> +    };
> diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt6795-sys-clock.yaml b/Documentation/devicetree/bindings/clock/mediatek,mt6795-sys-clock.yaml
> new file mode 100644
> index 000000000000..44b96af9ceaf
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/mediatek,mt6795-sys-clock.yaml
> @@ -0,0 +1,74 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/clock/mediatek,mt6795-sys-clock.yaml#";
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#";
> +
> +title: MediaTek System Clock Controller for MT6795
> +
> +maintainers:
> +  - AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
> +  - Chun-Jie Chen <chun-jie.chen@xxxxxxxxxxxx>
> +
> +description:
> +  The Mediatek system clock controller provides various clocks and system configuration

Wrap according to Linux coding convention, so at 80.

> +  like reset and bus protection on MT6795.
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - mediatek,mt6795-apmixedsys
> +          - mediatek,mt6795-infracfg
> +          - mediatek,mt6795-pericfg
> +          - mediatek,mt6795-topckgen
> +      - const: syscon
> +
> +  reg:
> +    maxItems: 1
> +
> +  '#clock-cells':
> +    const: 1
> +
> +  '#reset-cells':
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - '#clock-cells'
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        topckgen: clock-controller@10000000 {
> +            compatible = "mediatek,mt6795-topckgen", "syscon";
> +            reg = <0 0x10000000 0 0x1000>;
> +            #clock-cells = <1>;
> +        };
> +
> +        infracfg: power-controller@10001000 {
> +            compatible = "mediatek,mt6795-infracfg", "syscon";
> +            reg = <0 0x10001000 0 0x1000>;
> +            #clock-cells = <1>;
> +            #reset-cells = <1>;

No need for four examples of the same. They differ only by compatible,
so this is just unnecessary code... which as you can see does not pass
the checks. This also has to be fixed.

Maybe keep it as clock-controller?


Best regards,
Krzysztof