[PATCH v3 1/2] Documentation: bindings: Introduce scpi, sensors-scale

Martin Blumenstingl martin.blumenstingl at googlemail.com
Wed Mar 15 13:56:09 PDT 2017

On Wed, Mar 15, 2017 at 7:20 PM, Sudeep Holla <sudeep.holla at arm.com> wrote:
> On 09/03/17 10:17, Carlo Caione wrote:
>> From: Carlo Caione <carlo at endlessm.com>
>> Document the new property `scpi,sensors-scale` used by the hwmon-scpi
>> driver to convert the sensor readings to the correct / expected scale.
> I am fine with DT bindings if DT maintainers agree with having one but I
> would like to add couple of points to get their feedback:
> 1. ARM recognized the drawbacks of SCPI which started informally with
>    ARM Ltd platforms and got adopted by few vendors. It's now being
>    worked on and a much better and scalable replacement protocol is
>    being discussed with vendors now. So future enhancement to this SCPI
>    protocol is unlikely.
> 2. AmLogic has diverted from base protocol in many ways and most of them
>    are handled with just compatible so far without any need for
>    additional bindings. Can we avoid it ?
> So based on these, I prefer not to add more bindings to handle such
> deviations but make it just AmLogic specific.
could you please share your idea where this "Amlogic specific
implementation" fits best?
- in firmware/arm_scpi to keep a contract (for example: millicelsius)
to everyone who reads a temperature sensor for example
- or in hwmon/scpi-hwmon


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