linux-kernel - Re: [PATCH v3] dt-bindings: iio: afe: voltage-divider: Add io-channel-cells

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Date: Fri, 2 Feb 2024 13:07:51 +0000
From: Conor Dooley <conor.dooley@...rochip.com>
To: Peter Rosin <peda@...ntia.se>
CC: Naresh Solanki <naresh.solanki@...ements.com>, Conor Dooley
	<conor@...nel.org>, Jonathan Cameron <Jonathan.Cameron@...wei.com>, Krzysztof
 Kozlowski <krzysztof.kozlowski@...aro.org>, Jonathan Cameron
	<jic23@...nel.org>, Lars-Peter Clausen <lars@...afoo.de>, Rob Herring
	<robh+dt@...nel.org>, Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>,
	<mazziesaccount@...il.com>, <linux-iio@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] dt-bindings: iio: afe: voltage-divider: Add
 io-channel-cells

On Fri, Feb 02, 2024 at 12:49:26PM +0100, Peter Rosin wrote:
> 2024-02-02 at 11:43, Naresh Solanki wrote:
> > On Wed, 31 Jan 2024 at 22:24, Conor Dooley <conor@...nel.org> wrote:
> >> On Wed, Jan 31, 2024 at 04:35:16PM +0000, Jonathan Cameron wrote:
> >>> On Wed, 31 Jan 2024 09:29:59 +0100
> >>> Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
> >>>> On 30/01/2024 12:56, Naresh Solanki wrote:
> >>> Conor requested an example of the device acting as a consumer and a provider.
> >>> Might have meant in the patch description?
> >>>
> >>> Conor?
> >>
> >> I wanted it in the property description to help with understanding when
> >> to use it. I don't think the extra example nodes actually help you
> >> understand what it is doing, only how to write one yourself once you
> >> know you need it.
> >
> > I'm not sure if I get it right but what I understood is that a
> > voltage-divider can
> > also be a provider to other devices & hence the property.
> > Also do you want me to put a complete example of it in description ?
> 
> My understanding is the requested example in the description should not
> be exactly /how/ to hook up the voltage-divider as a provider, but
> instead have some words about why it is interesting to do so at all. And
> those words would also make it clear that is even possible. The latter
> is something which, to be honest, is perhaps not all that obvious. It
> has always been totally obvious to me of course, sorry for not being
> clearer when I wrote the binding...

Yeah, you're right about what I was looking for Peter.

In my original request, which I think I already linked to in this
thread, I said that I would like an example like the one that Peter had
used to explain to me the scenario in which someone would want to use
this feature:
https://lore.kernel.org/all/536971eb-51f0-40e5-d025-7c4c1d683d49@axentia.se/

Cheers,
Conor.

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