linux-kernel - Re: [PATCH 1/3] dt-bindings: clk: sprd: Add UMS9620 support

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Date: Thu, 4 Jan 2024 09:46:52 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Chunyan Zhang <chunyan.zhang@...soc.com>, Stephen Boyd
 <sboyd@...nel.org>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Orson Zhai <orsonzhai@...il.com>,
 Baolin Wang <baolin.wang@...ux.alibaba.com>,
 Chunyan Zhang <zhang.lyra@...il.com>
Subject: Re: [PATCH 1/3] dt-bindings: clk: sprd: Add UMS9620 support

On 29/12/2023 09:51, Chunyan Zhang wrote:
> Add UMS9620's clock compatible strings and descriptions for clock
> and clock-names for UMS9620.
> 
> Signed-off-by: Chunyan Zhang <chunyan.zhang@...soc.com>
> ---
>  .../bindings/clock/sprd,ums512-clk.yaml       | 79 ++++++++++++++++---
>  1 file changed, 68 insertions(+), 11 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml b/Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml
> index 43d2b6c31357..dcad41a1fea7 100644
> --- a/Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml
> +++ b/Documentation/devicetree/bindings/clock/sprd,ums512-clk.yaml
> @@ -30,25 +30,38 @@ properties:
>        - sprd,ums512-mm-clk
>        - sprd,ums512-mm-gate-clk
>        - sprd,ums512-apapb-gate
> +      - sprd,ums9620-pmu-gate
> +      - sprd,ums9620-g1-pll
> +      - sprd,ums9620-g5l-pll
> +      - sprd,ums9620-g5r-pll
> +      - sprd,ums9620-g8-pll
> +      - sprd,ums9620-g9-pll
> +      - sprd,ums9620-g10-pll
> +      - sprd,ums9620-apapb-gate
> +      - sprd,ums9620-ap-clk
> +      - sprd,ums9620-apahb-gate
> +      - sprd,ums9620-aon-gate
> +      - sprd,ums9620-aonapb-clk
> +      - sprd,ums9620-topdvfs-clk
> +      - sprd,ums9620-ipaapb-gate
> +      - sprd,ums9620-ipa-clk
> +      - sprd,ums9620-ipaglb-gate
> +      - sprd,ums9620-ipadispc-gate
> +      - sprd,ums9620-pcieapb-gate
> +      - sprd,ums9620-pcie-clk
> +      - sprd,ums9620-mm-gate
> +      - sprd,ums9620-mm-clk
> +      - sprd,ums9620-dpu-vsp-gate
> +      - sprd,ums9620-dpu-vsp-clk
>  
>    "#clock-cells":
>      const: 1
>  
>    clocks:
> -    minItems: 1
> -    maxItems: 4

No, constraints stay here.

>      description: |
>        The input parent clock(s) phandle for the clock, only list
>        fixed clocks which are declared in devicetree.
>  
> -  clock-names:

No, you cannot just drop properties. Widest constraints stay here.

> -    minItems: 1
> -    items:
> -      - const: ext-26m
> -      - const: ext-32k
> -      - const: ext-4m
> -      - const: rco-100m
> -
>    reg:
>      maxItems: 1
>  
> @@ -57,7 +70,43 @@ required:
>    - '#clock-cells'
>    - reg
>  
> -additionalProperties: false
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            pattern: "^sprd,ums512-.*"
> +
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 1
> +          maxItems: 4
> +
> +        clock-names:
> +          minItems: 1
> +          items:
> +            - const: ext-26m
> +            - const: ext-32k
> +            - const: ext-4m
> +            - const: rco-100m
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            pattern: "^sprd,ums9620-.*"
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 1
> +          maxItems: 6
> +
> +        clock-names:
> +          minItems: 1
> +          maxItems: 6

Missing names.

Most likely you are trying to stuff too many devices into one binding. I
suggest split, could be with some shared/common schema (see Qualcomm GCC
bindings).

> +
> +unevaluatedProperties: false
>  
>  examples:
>    - |
> @@ -68,4 +117,12 @@ examples:
>        clock-names = "ext-26m";
>        #clock-cells = <1>;
>      };
> +
> +    aonapb_gate: clock-controller@0 {
> +      compatible = "sprd,ums9620-aon-gate";

Drop entire example, no need for new example for every new compatible.



Best regards,
Krzysztof