linux-kernel - Re: [PATCH 1/3] dt-bindings: i2c: mv64xxx: update bindings for unstuck register

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Message-ID: <20230927-proofread-spoken-79f13b074a5f@spud>
Date:   Wed, 27 Sep 2023 16:05:28 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Chris Packham <chris.packham@...iedtelesis.co.nz>
Cc:     gregory.clement@...tlin.com, andi.shyti@...nel.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, pierre.gondois@....com,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: i2c: mv64xxx: update bindings for
 unstuck register

On Wed, Sep 27, 2023 at 12:47:59PM +1300, Chris Packham wrote:
> Some newer Marvell SoCs support an "unstuck" function for I2C bus
> recovery. This is an alternative to the generic GPIO based recovery that
> the older SoCs use. The unstuck register falls outside of the usual
> address block for the I2C controller so requires an additional cell in
> the register property. This is optional and does not need to be
> supplied.
> 
> Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>

Acked-by: Conor Dooley <conor.dooley@...rochip.com>

Thanks,
Conor.
> ---
>  .../devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml         | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml
> index 984fc1ed3ec6..461d1c9ee3f7 100644
> --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml
> +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml
> @@ -45,7 +45,10 @@ properties:
>        auto-detects this and sets it appropriately.
>  
>    reg:
> -    maxItems: 1
> +    minItems: 1
> +    items:
> +      - description: I2C controller registers
> +      - description: I2C unstuck register
>  
>    interrupts:
>      maxItems: 1
> -- 
> 2.42.0
> 
> 

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