linux-kernel - Re: [RFC PATCH v3 2/6] dt-bindings: spi/core: add wakeup-source optional property

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Message-ID: <20170626164016.GA4965@dtor-ws>
Date:   Mon, 26 Jun 2017 09:40:16 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Jeffy Chen <jeffy.chen@...k-chips.com>,
        linux-kernel@...r.kernel.org, briannorris@...omium.org,
        dianders@...omium.org, devicetree@...r.kernel.org,
        Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [RFC PATCH v3 2/6] dt-bindings: spi/core: add wakeup-source
 optional property

On Mon, Jun 26, 2017 at 11:00:11AM -0500, Rob Herring wrote:
> On Wed, Jun 21, 2017 at 06:01:49PM +0800, Jeffy Chen wrote:
> > Update document devicetree bindings to support "wakeup-source" property.
> > 
> > Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
> > ---
> > 
> > Changes in v3: None
> > 
> >  Documentation/devicetree/bindings/spi/spi-bus.txt | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/spi/spi-bus.txt b/Documentation/devicetree/bindings/spi/spi-bus.txt
> > index 1f6e86f..0fa1ccf 100644
> > --- a/Documentation/devicetree/bindings/spi/spi-bus.txt
> > +++ b/Documentation/devicetree/bindings/spi/spi-bus.txt
> > @@ -77,6 +77,7 @@ All slave nodes can contain the following optional properties:
> >  		    Defaults to 1 if not present.
> >  - spi-rx-delay-us - Microsecond delay after a read transfer.
> >  - spi-tx-delay-us - Microsecond delay after a write transfer.
> > +- wakeup-source   - Device can be used as a wakeup source.
> 
> wakeup-source is valid for any device with an interrupts property 
> already, so I don't think this is necessary.

Do you mean it is not necessary on SPI level or not necessary at all? Or
you disagree with wording? Because we do need a way to say that on given
platform the device is supposed to be configured as a wakeup source.

Thanks.

-- 
Dmitry