linux-kernel - Re: [PATCH 1/2] dt-bindings: iio: sx9324: Add CS idle/sleep mode

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Message-ID: <YnE5xMS13oSuR5rx@robh.at.kernel.org>
Date:   Tue, 3 May 2022 09:18:44 -0500
From:   Rob Herring <robh@...nel.org>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     Jonathan Cameron <jic23@...nel.org>, linux-kernel@...r.kernel.org,
        patches@...ts.linux.dev, devicetree@...r.kernel.org,
        linux-iio@...r.kernel.org, Gwendal Grignou <gwendal@...omium.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>
Subject: Re: [PATCH 1/2] dt-bindings: iio: sx9324: Add CS idle/sleep mode

On Mon, May 02, 2022 at 05:41:55PM -0700, Stephen Boyd wrote:
> We need to configure the sleep and idle mode of the CS pins for this
> device. Add a DT property to do this so pins are in a proper state
> during sleep (either hi-z, grounded, or pulled up to vdd).
> 
> Cc: Gwendal Grignou <gwendal@...omium.org>
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>
> ---
>  .../devicetree/bindings/iio/proximity/semtech,sx9324.yaml | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
> index d265eb5258c8..6cec3481c8b2 100644
> --- a/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
> +++ b/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
> @@ -126,6 +126,14 @@ properties:
>        UINT_MAX (4294967295) represents infinite. Other values
>        represent 1-1/N.
>  
> +  semtech,cs-idle-sleep:
> +    description:
> +      State of CS pins during sleep mode and idle time.
> +    enum:
> +      - hz

I was trying to figure out how Hertz was a pin state. 'hiz' or 'hi-z' 
instead?

> +      - gnd
> +      - vdd
> +
>    semtech,int-comp-resistor:
>      description:
>        Internal resistor setting for compensation.
> -- 
> https://chromeos.dev
> 
>