Messages in this thread | | | Date | Tue, 30 Jun 2020 23:56:09 +0200 | From | Miquel Raynal <> | Subject | Re: [PATCH v6] gpio: pca953x: Add Maxim MAX7313 PWM support |
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Hello,
Andy Shevchenko <andy.shevchenko@gmail.com> wrote on Wed, 1 Jul 2020 00:27:31 +0300:
> On Tue, Jun 30, 2020 at 3:45 PM Uwe Kleine-König > <u.kleine-koenig@pengutronix.de> wrote: > > On Tue, Jun 30, 2020 at 11:13:31AM +0200, Bartosz Golaszewski wrote: > > > I can't find anything in any of the previous threads. What was the > > > reason to not go the MFD way here? > > > > MFD doesn't work because the different "modes" are not orthogonal. So > > this is not a single device that provides several functions at the same > > time that can be used in parallel. > > Did I get this correctly that it's either *all* pins are GPIO or *all* are PWM? > > Otherwise, it fits from my point of view. >
Sorry for not being clear in the first place : the choice between pure GPIO and PWM is on a per output basis. As Uwe said, the two "modes" are not orthogonal hence the MFD does not fit here IMHO.
Thanks, Miquèl
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