Re: [PATCH] Documentation: dt: i2c: Add LPS001WP to the TrivialDevices list

From: Lee Jones
Date: Wed Sep 04 2013 - 12:36:06 EST


Looping Wolfram back in, as I cocked up his email address.

> Cheers for producing a binding.
>
> On Wed, Sep 04, 2013 at 02:50:55PM +0100, Lee Jones wrote:
> > LPS001WP is a Pressure and Temperature sensor.
> >
> > Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
> > ---
> > Documentation/devicetree/bindings/i2c/trivial-devices.txt | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
> > index ad6a738..6038807e6 100644
> > --- a/Documentation/devicetree/bindings/i2c/trivial-devices.txt
> > +++ b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
> > @@ -57,6 +57,7 @@ st-micro,24c256 i2c serial eeprom (24cxx)
> > stm,m41t00 Serial Access TIMEKEEPER
> > stm,m41t62 Serial real-time clock (RTC) with alarm
> > stm,m41t80 M41T80 - SERIAL ACCESS RTC WITH ALARMS
> > +stm,lps001wp Pressure and Temperature sensor
>
> As I hinted at in the other thread [1], I don't think this can be
> documented as a trivial binding -- the driver expects a couple of
> regulators which should be described in the binding (or the driver
> shouldn't be using them...).

Surely all devices need to be powered and would subsequently require a
regulator of one description or other? We don't really *need* to
manually enable it on my platform but that's because it's 'always
on', but we do anyway for completeness.

Would a (regulator: vdd) note in this patch be suitable? It seems a
shame to have to produce a boilerplate binding entry for the sake of a
regulator.

Wolfram, what's the common procedure in cases such as these?

> Also, in the other thread the "st," prefix was used [2], while "stm," is
> listed at the prefix in the binding. As far as I can see, "st," should
> be used, as it's in vendor-prefixes and "stm," is not.
>
> I'm happy to cook up a patch adding deprecation notes and corrected
> strings for the existing incorrect "stm," bindings.

Sure, feel free.

--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org â Open source software for ARM SoCs
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