Thread (38 messages) 38 messages, 5 authors, 2021-06-05

Re: [PATCH v1 9/9] dt-bindings: iio: afe: add binding for temperature-sense-amplifier

From: Liam Beguin <hidden>
Date: 2021-05-31 16:53:30
Also in: linux-iio, lkml

Hi Peter,

On Mon May 31, 2021 at 3:32 AM EDT, Peter Rosin wrote:
Hi!

On 2021-05-30 02:59, Liam Beguin wrote:
quoted
From: Liam Beguin <redacted>

An ADC is often used to measure other quantities indirectly. This
binding describe one cases, the measurement of a temperature through a
voltage sense amplifier such as the LTC2997.

Signed-off-by: Liam Beguin <redacted>
What's the significant difference between this and the RTD binding? Does
not both simply scale/offset a voltage to a temperature?
The way I looked at it was one binding per sensor type (resistance
driven, current driven, and voltage driven).

Thinking about it more, these three bindings could be factorized into
one if the user is required to enter parameters "by hand".

These could become something like:
- sense-gain-mult
- sense-gain-div
- sense-offset

I like the idea of having the "datasheet parameters" in the devicetree,
but this would be a lot more versatile.

What do you think?

Cheers,
Liam
Cheers,
Peter
  
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