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

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Message-ID: <CAE-0n50OM1mV0xc6RrSAo_rC63hWbM6fH4+9pJuwvBCG4YeqwA@mail.gmail.com>
Date:   Tue, 3 May 2022 12:13:03 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Rob Herring <robh@...nel.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

Quoting Rob Herring (2022-05-03 07:18:44)
> 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?

Sure. I was following the datasheet that has "HZ" but hi-z is better.