linux-kernel - Re: [PATCH 0/3] iio: temperature: Add support for P3T1085

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Message-ID: <Zy5AFxdkxIvB37M/@lizhi-Precision-Tower-5810>
Date: Fri, 8 Nov 2024 11:45:11 -0500
From: Frank Li <Frank.li@....com>
To: Guenter Roeck <linux@...ck-us.net>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	Carlos Song <carlos.song@....com>,
	Clark Wang <xiaoning.wang@....com>,
	Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org
Subject: Re: [PATCH 0/3] iio: temperature: Add support for P3T1085

On Fri, Nov 08, 2024 at 07:49:54AM -0800, Guenter Roeck wrote:
> On 11/8/24 07:28, Jonathan Cameron wrote:
> > On Thu, 07 Nov 2024 18:02:26 -0500
> > Frank Li <Frank.Li@....com> wrote:
> >
> > > Add basic function support for P3T1085 temperature sensor.
> > > - Add binding doc trivial.yaml
> > > - Add basic read temperature driver
> > Hi Frank,
> >
> > For a simple temperature sensor the usual question is why IIO rather
> > than hwmon?
> >
>
> From looking into the datasheet, this is a chip which will be typically
> used for hardware monitoring.
>
> > Previous reasons have been:
> > - Very high performmance / accuracy part (i.e. expensive)
>
> 0.25 Hz ... 16 Hz sampling rate. No.
>
> > - Remote temperature so not typically hw monitoring.
>
> Local only.
>
> > - Same silicon with a more complex sensor (typically humidity or similar).
> >
> No.
>
> It looks like the I2C part of the chip is is compatible to TMP108, so
> another question would be why to implement a new driver in the first place.

Thanks, let me check TMP108.

Frank
>
> Guenter
>
>