linux-kernel - Re: [PATCH v3 2/2] iio: adc: adding support for MCP3564 ADC

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Message-ID: <20230828144820.5552aa0a@jic23-huawei>
Date:   Mon, 28 Aug 2023 14:48:20 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     <Marius.Cristea@...rochip.com>
Cc:     <devicetree@...r.kernel.org>, <conor+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <lars@...afoo.de>,
        <linux-iio@...r.kernel.org>, <robh+dt@...nel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] iio: adc: adding support for MCP3564 ADC

On Fri, 18 Aug 2023 16:29:26 +0000
<Marius.Cristea@...rochip.com> wrote:

> Hi Jonathan,
> 
> >   
> > > @@ -0,0 +1,53 @@
> > > +What:               
> > > /sys/bus/iio/devices/iio:deviceX/boost_current
> > > +KernelVersion:       6.4
> > > +Contact:     linux-iio@...r.kernel.org
> > > +Description:
> > > +             This attribute is used to set the biasing circuit of
> > > the
> > > +             Delta-Sigma modulator. The different BOOST settings
> > > are applied
> > > +             to the entire modulator circuit, including the
> > > voltage reference
> > > +             buffers.  
> > 
> > Units?  Should be  mA given that is what we use for other current
> > attributes
> > in IIO.
> >   
> 
> This should have no units because is a "gain" for the bias current. I
> think it will be better to change the name of the attribute to
> "boost_current_gain".

That's sounds reasonable to me as well.


> 
> 
> > This one may cause us problems with generality of the description if
> > we reuse
> > if for other devices (and hence move it to the more general files),
> > but we
> > can figure this out at the time.
> >   
> > >   
> 
> Thanks and Best Regards,
> Marius
>