linux-kernel - Re: [PATCH 1/3] dt-bindings: dsp: support imx8ulp dsp clocks

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Message-ID: <ZiGLxBa8CMsaRSTc@lizhi-Precision-Tower-5810>
Date: Thu, 18 Apr 2024 17:08:20 -0400
From: Frank Li <Frank.li@....com>
To: Laurentiu Mihalcea <laurentiumihalcea111@...il.com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Daniel Baluta <daniel.baluta@....com>,
	Shengjiu Wang <shengjiu.wang@....com>,
	Liu Ying <victor.liu@....com>,
	Laurentiu Mihalcea <laurentiu.mihalcea@....com>,
	devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/3] dt-bindings: dsp: support imx8ulp dsp clocks

On Thu, Apr 18, 2024 at 11:37:18PM +0300, Laurentiu Mihalcea wrote:
> From: Laurentiu Mihalcea <laurentiu.mihalcea@....com>
> 
> i.MX8ULP DSP node needs a MU clock, but doesn't need
> a debug clock. Change "clocks" and "clock-names" properties
> to allow for this case.
> 
> Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@....com>
> ---
>  .../devicetree/bindings/dsp/fsl,dsp.yaml      | 51 ++++++++++++++-----
>  1 file changed, 39 insertions(+), 12 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
> index 9af40da5688e..4a39d57b1cc6 100644
> --- a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
> +++ b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
> @@ -30,22 +30,12 @@ properties:
>      maxItems: 1
>  
>    clocks:
> -    items:
> -      - description: ipg clock
> -      - description: ocram clock
> -      - description: core clock
> -      - description: debug interface clock
> -      - description: message unit clock
>      minItems: 3
> +    maxItems: 5
>  
>    clock-names:
> -    items:
> -      - const: ipg
> -      - const: ocram
> -      - const: core
> -      - const: debug
> -      - const: mu
>      minItems: 3
> +    maxItems: 5
>  
>    power-domains:
>      description:
> @@ -93,6 +83,43 @@ required:
>    - memory-region
>  
>  allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: fsl,imx8ulp-hifi4
> +    then:
> +      properties:
> +        clocks:
> +          items:
> +            - description: ipg clock
> +            - description: ocram clock
> +            - description: core clock
> +            - description: message unit clock
> +        clock-names:
> +          items:
> +            - const: ipg
> +            - const: ocram
> +            - const: core
> +            - const: mu
> +    else:
> +      properties:
> +        clocks:
> +          items:
> +            - description: ipg clock
> +            - description: ocram clock
> +            - description: core clock
> +            - description: debug interface clock
> +            - description: message unit clock
> +          minItems: 3
> +        clock-names:
> +          items:
> +            - const: ipg
> +            - const: ocram
> +            - const: core
> +            - const: debug
> +            - const: mu
> +          minItems: 3

According to your descript, look like only clk "debug" is difference.

How about

  clocks:                                                               
    items:                                                              
      - description: ipg clock                                          
      - description: ocram clock                                        
      - description: core clock                                         
      - description: message unit clock                                 
      - description: debug interface clock

   clock-names:                                                          
      items:                                                              
        - const: ipg                                                      
        - const: ocram                                                    
        - const: core
	- const: mu                                                     
        - const: debug                                                    

allOf:
   if:                                                                 
     properties:                                                       
       compatible:                                                     
          contains:                                                     
            const: fsl,imx8ulp-hifi4
   then:
     properties:
       clocks:
         minItems: 4
       clock-names:
         minItems: 4

   else:
     propertyies:
       clocks:
         minItems: 3
       clock-names:
         minItems: 3



>    - if:
>        properties:
>          compatible:
> -- 
> 2.34.1
>