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Date:   Tue, 12 May 2020 21:19:32 -0500
From:   Rob Herring <robh@...nel.org>
To:     Alain Volmat <alain.volmat@...com>
Cc:     wsa@...nel.org, mark.rutland@....com, pierre-yves.mordret@...com,
        mcoquelin.stm32@...il.com, alexandre.torgue@...com,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        fabrice.gasnier@...com
Subject: Re: [PATCH 3/4] dt-bindings: i2c-stm32: add SMBus Alert bindings

On Tue, May 05, 2020 at 07:51:10AM +0200, Alain Volmat wrote:
> Add a new binding of the i2c-stm32f7 driver to enable the handling
> of the SMBUS-Alert
> 
> Signed-off-by: Alain Volmat <alain.volmat@...com>
> ---
>  Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
> index b50a2f420b36..04c0882c3661 100644
> --- a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
> +++ b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
> @@ -36,6 +36,10 @@ allOf:
>                  minItems: 3
>                  maxItems: 3
>  
> +        st,smbus-alert:
> +          description: Enable the SMBus Alert feature
> +          $ref: /schemas/types.yaml#/definitions/flag
> +

We already have smbus_alert interrupt. Can't you just check for this in 
the slave nodes and enable if found?

>    - if:
>        properties:
>          compatible:
> -- 
> 2.17.1
> 

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