[PATCH v3 3/6] dt-bindings: mfd: da9062: add regulator voltage selection documentation

[Adam Thomson]

> -----Original Message-----
> From: Marco Felsch <m.felsch at pengutronix.de>
> Sent: 16 December 2019 08:55
> To: Mark Brown <broonie at kernel.org>
> Cc: devicetree at vger.kernel.org; Support Opensource
> <Support.Opensource at diasemi.com>; linux-aspeed at lists.ozlabs.org; linux-
> gpio at vger.kernel.org; andrew at aj.id.au; linus.walleij at linaro.org;
> lgirdwood at gmail.com; linux-kernel at vger.kernel.org;
> bgolaszewski at baylibre.com; robh+dt at kernel.org; joel at jms.id.au;
> kernel at pengutronix.de; Adam Thomson
> <Adam.Thomson.Opensource at diasemi.com>; lee.jones at linaro.org; linux-arm-
> kernel at lists.infradead.org
> Subject: Re: [PATCH v3 3/6] dt-bindings: mfd: da9062: add regulator voltage
> selection documentation
> 
> On 19-12-12 16:51, Mark Brown wrote:
> > On Thu, Dec 12, 2019 at 05:21:53PM +0100, Marco Felsch wrote:
> >
> > > "... what's driving the input ..":
> > > Sorry I didn't get you here. What did you mean? The input is driven by
> > > the host. This can be any gpio line and in my case it is a gpio line
> > > driven by the soc-hw during a suspend operation.
> >
> > Something needs to say what that thing is, especially if it's runtime
> > controllable.  In your case from the point of view of software there is
> > actually no enable control so we shouldn't be providing an enable
> > operation to the framework.
> 
> The enabel control signal is always available, please check [1] table
> 63. There is a mux in front of the enable pin so:
> 
>              +-------------
>  Seq. |\     |   Regulator
>  GPI1 | \    |
>  GPI2 | | -- > Enable
>  GPI3 | /    |
>       |/     .
>              .
>              .
> 
> Adam please correct me if this is wrong.
> 
> [1] https://www.dialog-
> semiconductor.com/sites/default/files/da9062_datasheet_3v6.pdf
> 
> Regards,
>   Marco
> 
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel at lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel