linux-kernel - Re: [PATCH 2/5] dt-bindings: mailbox: imx-mu: add i.MX93 S4 MU support

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Date:   Mon, 7 Feb 2022 21:05:49 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>, jassisinghbrar@...il.com,
        robh+dt@...nel.org, shawnguo@...nel.org
Cc:     s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-imx@....com, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Peng Fan <peng.fan@....com>
Subject: Re: [PATCH 2/5] dt-bindings: mailbox: imx-mu: add i.MX93 S4 MU
 support

On 07/02/2022 10:58, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@....com>
> 
> Similar to i.MX8ULP S4 MU, i.MX93 MU is dedicated for communication
> between Sentinel and Cortex-A cores from hardware design, it could not be
> reused for other purpose.
> 
> However i.MX93 S4 MU use seperate tx/rx interrupt, so update
> interrupts and add interrupt-names property.
> 
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  .../devicetree/bindings/mailbox/fsl,mu.yaml        | 14 +++++++++++---
>  1 file changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
> index 713cb847cd8c..f99890ae1813 100644
> --- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
> +++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
> @@ -29,10 +29,11 @@ properties:
>        - const: fsl,imx8ulp-mu
>        - const: fsl,imx8-mu-scu
>        - const: fsl,imx8-mu-seco
> +      - const: fsl,imx93-mu-s4
>        - const: fsl,imx8ulp-mu-s4
>        - items:
> -          const: fsl,imx93-mu
> -          const: fsl,imx8ulp-mu
> +          - const: fsl,imx93-mu
> +          - const: fsl,imx8ulp-mu
>        - items:
>            - enum:
>                - fsl,imx7s-mu
> @@ -55,7 +56,14 @@ properties:
>      maxItems: 1
>  
>    interrupts:
> -    maxItems: 1
> +    minItems: 1
> +    maxItems: 2
> +
> +  interrupt-names:
> +    minItems: 1
> +    items:
> +      - const: txirq
> +      - const: rxirq

You miss 'if' block defining number of interrupts per compatibles.

>  
>    "#mbox-cells":
>      description: |


Best regards,
Krzysztof