linux-kernel - Re: [PATCH v2 1/2] dt-bindings: leds: aw2013: Document vddio-supply

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Date:   Mon, 20 Mar 2023 19:04:22 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Lin, Meng-Bo" <linmengbo0689@...tonmail.com>,
        linux-kernel@...r.kernel.org
Cc:     Pavel Machek <pavel@....cz>, Lee Jones <lee@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Nikita Travkin <nikita@...n.ru>,
        Stephan Gerhold <stephan@...hold.net>,
        linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH v2 1/2] dt-bindings: leds: aw2013: Document vddio-supply

On 20/03/2023 18:55, Lin, Meng-Bo wrote:
> Some LEDs controllers are used with external pull-up for the interrupt
> line and the I2C lines, so we might need to enable a regulator to bring
> the lines into usable state.

Not a property of this device.

> Otherwise, this might cause spurious
> interrupts and reading from I2C will fail.
> 
> Document support for "vddio-supply" that is enabled by the aw2013 driver
> so that the regulator gets enabled when needed.
> 
> Signed-off-by: Lin, Meng-Bo <linmengbo0689@...tonmail.com>
> ---
>  Documentation/devicetree/bindings/leds/leds-aw2013.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/leds/leds-aw2013.yaml b/Documentation/devicetree/bindings/leds/leds-aw2013.yaml
> index 08f3e1cfc1b1..79b69cf1d1fe 100644
> --- a/Documentation/devicetree/bindings/leds/leds-aw2013.yaml
> +++ b/Documentation/devicetree/bindings/leds/leds-aw2013.yaml
> @@ -23,6 +23,11 @@ properties:
>    vcc-supply:
>      description: Regulator providing power to the "VCC" pin.
>  
> +  vddio-supply:
> +    description: |
> +      Optional regulator that provides digital I/O voltage,

NAK. I responded to your patch and you just send a v2 without explanation.

The device does not have VDDIO pin, either.

Best regards,
Krzysztof