linux-kernel - Re: [PATCH v2 1/2] dt-bindings: i2c: Add custom properties for MAX7357/MAX7358

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Message-ID: <0b7cb454-4c31-569c-7609-7931e6fb798a@linaro.org>
Date:   Thu, 31 Aug 2023 14:03:18 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Naresh Solanki <naresh.solanki@...ements.com>,
        Peter Rosin <peda@...ntia.se>,
        Andi Shyti <andi.shyti@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Patrick Rudolph <patrick.rudolph@...ements.com>,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] dt-bindings: i2c: Add custom properties for
 MAX7357/MAX7358

On 31/08/2023 12:15, Naresh Solanki wrote:
> From: Patrick Rudolph <patrick.rudolph@...ements.com>
> 
> Both chips have a configuration register to enable additional
> features. These features aren't enabled by default & its up to
> board designer to enable the same.
> 
> Add booleans for:
>  - maxim,isolate-stuck-channel
>  - maxim,send-flush-out-sequence
>  - maxim,preconnection-wiggle-test-enable
> 
> Signed-off-by: Patrick Rudolph <patrick.rudolph@...ements.com>
> Signed-off-by: Naresh Solanki <Naresh.Solanki@...ements.com>

Subject: still did not improve. You waited exactly 30 minutes for my
feedback after sending your response.



> ---
> Changes in V2:
> - Update properties.
> ---
>  .../bindings/i2c/i2c-mux-pca954x.yaml         | 31 +++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
> index 2d7bb998b0e9..fa73eadfdf7b 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
> +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pca954x.yaml
> @@ -71,6 +71,23 @@ properties:
>      description: A voltage regulator supplying power to the chip. On PCA9846
>        the regulator supplies power to VDD2 (core logic) and optionally to VDD1.
>  
> +  maxim,isolate-stuck-channel:
> +    type: boolean
> +    description: Allows to use non faulty channels while a stuck channel is
> +      isolated from the upstream bus. If not set all channels are isolated from
> +      the upstream bus until the fault is cleared.

Nothing improved here. As I said, please provide arguments or drop this
property.

> +
> +  maxim,send-flush-out-sequence:
> +    type: boolean
> +    description: Send a flush-out sequence to stuck auxiliary buses
> +      automatically after a stuck channel is being detected.

Ditto

> +
> +  maxim,preconnection-wiggle-test-enable:
> +    type: boolean
> +    description: Send a STOP condition to the auxiliary buses when the switch
> +      register activates a channel to detect a stuck high fault. On fault the
> +      channel is isolated from the upstream bus.

Ditto


Best regards,
Krzysztof