linux-kernel - Re: [PATCH v7 06/11] dt-bindings: usb: ci-hdrc-usb2-imx: add compatible and clock-names restriction for imx93

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Date: Thu, 29 Feb 2024 16:14:13 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Xu Yang <xu.yang_2@....com>, gregkh@...uxfoundation.org,
 robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org, shawnguo@...nel.org,
 conor+dt@...nel.org
Cc: s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
 linux-imx@....com, peter.chen@...nel.org, jun.li@....com,
 linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 06/11] dt-bindings: usb: ci-hdrc-usb2-imx: add
 compatible and clock-names restriction for imx93

On 28/02/2024 12:29, Xu Yang wrote:
> The i.MX93 needs a wakup clock to work properly. This will add compatible
> and restriction for i.MX93 platform.
> 
> Signed-off-by: Xu Yang <xu.yang_2@....com>
> 
> ---
> Changes in v2:
>  - no changes
> Changes in v3:
>  - add clocks restriction
> Changes in v4:
>  - use 'contains' rather 'items'
> Changes in v5:
>  - rename clock name
> Changes in v6:
>  - new patch based on ci-hdrc-usb2-imx.yaml
> Changes in v7:
>  - no changes
> ---
>  .../bindings/usb/ci-hdrc-usb2-imx.yaml        | 34 ++++++++++++++-----
>  1 file changed, 26 insertions(+), 8 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2-imx.yaml b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2-imx.yaml
> index a4730a2393e6..a2932af2c09b 100644
> --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2-imx.yaml
> +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2-imx.yaml
> @@ -40,6 +40,7 @@ properties:
>            - enum:
>                - fsl,imx8mm-usb
>                - fsl,imx8mn-usb
> +              - fsl,imx93-usb
>            - const: fsl,imx7d-usb
>            - const: fsl,imx27-usb
>        - items:
> @@ -186,14 +187,31 @@ allOf:
>                - const: ahb
>                - const: per
>        else:
> -        # other imx Socs only need one clock
> -        properties:
> -          clocks:
> -            minItems: 1
> -            maxItems: 1
> -          clock-names:
> -            minItems: 1
> -            maxItems: 1

Just make the list explicit in the first place. Don't add lines in one
patch which is immediately fixed/dropped/replaced.

> +        # imx93 Soc needs two clocks
> +        if:

No, no. No if:else:if:else:if:else. Unreadable and unmaintainable.


Best regards,
Krzysztof