linux-kernel - Re: [PATCH 1/2] dt-bindings: iio: proximity: Add bindings for Murata IRS-D200

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Message-ID: <20230702183409.0000021f@Huawei.com>
Date:   Sun, 2 Jul 2023 18:34:09 +0800
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Waqar Hameed <waqar.hameed@...s.com>
CC:     Jonathan Cameron <jic23@...nel.org>, <devicetree@...r.kernel.org>,
        "Conor Dooley" <conor+dt@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>, <kernel@...s.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        <kernel@...ts.axis.com>
Subject: Re: [PATCH 1/2] dt-bindings: iio: proximity: Add bindings for
 Murata IRS-D200

On Mon, 19 Jun 2023 12:41:06 +0200
Waqar Hameed <waqar.hameed@...s.com> wrote:

> On Sat, Jun 17, 2023 at 13:55 +0100 Jonathan Cameron <jic23@...nel.org> wrote:
> 
> > On Fri, 16 Jun 2023 17:10:42 +0200
> > Waqar Hameed <waqar.hameed@...s.com> wrote:
> >  
> >> Murata IRS-D200 is a PIR sensor for human detection. It uses the I2C bus
> >> for communication with interrupt support. Add devicetree bindings
> >> requiring the compatible string, I2C slave address (reg) and interrupts.
> >> 
> >> Signed-off-by: Waqar Hameed <waqar.hameed@...s.com>  
> >
> > This device will have some power supplies, so I'd expect those to be both
> > listed and marked as required (maybe some are optional?)  
> 
> Right, will add that here (and call `devm_regulator_get_enable()` in
> driver's probe).
> 
> [...]
> 
> >> +required:
> >> +  - compatible
> >> +  - reg
> >> +  - interrupts  
> >
> > If it is possible to remove interrupts from requires  - and hence have
> > at least a partly functional driver doing basic reading of the sensor
> > then that is usually a good idea.   Far too many board designers seem
> > to decide that they don't need to wire up interrupt liness
> > If it's really hard then don't worry too much.  
> 
> I see. It would be possible, but would also require some work. Let's
> leave it for now then?

Sure - as long as you review the patches when they come in :)

Jonathan