Re: [PATCH v2 9/9] dt-bindings: iio: imu: st_lsm6dsx: add support to i2c pullup resistors

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> On Sat, 17 Nov 2018 09:37:54 -0600
> Rob Herring <robh@xxxxxxxxxx> wrote:
>

[...]

> > >  Optional properties:
> > >  - st,drdy-int-pin: the pin on the package that will be used to signal
> > >    "data ready" (valid values: 1 or 2).
> > > +- st,pullups : enable/disable internal i2c controller pullup resistors.
> >
> > bias-pull-up is the standard property for this.
>
> The problem here is 'of what?'.  Perhaps it wasn't clear in the current
> binding either, but we are talking the pull ups on the auxilliary i2c bus
> (which doesn't really have a direct representation in DT at all).
> If we just go with bias-pull-up my instinct would be that it was applying
> to the drdy pin for example.
>
> Lorenzo, could you send a follow up patch fixing this once we
> have it pinned down?
>

Sure, it sounds good. IIUC we should use 'bias-pull-up' here, without
vendor info, right?

Regards,
Lorenzo

> We have plenty of time to get it in before the end of the cycle, so I would
> rather do that than revert this series over it.  Conversely I don't
> want a binding we are still discussing getting into a release.  I should have
> given Rob time to get to this.  Lots of precedence doesn't mean there isn't
> a better way!  Sorry All.
>
> Thanks,
>
> Jonathan
>
> >
> > >  - drive-open-drain: the interrupt/data ready line will be configured
> > >    as open drain, which is useful if several sensors share the same
> > >    interrupt line. This is a boolean property.
> > > --
> > > 2.19.1
> > >
>



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