Dropping device tree pinmux nodes for GPIO usage (Was: [PATCH 3/5] arm64: dts: sun50i: add MMC nodes)

Maxime Ripard
2017-01-17T08:33:51Z

On Sun, Jan 15, 2017 at 04:59:32PM +0100, Rask Ingemann Lambertsen wrote:
> On Tue, Jan 03, 2017 at 10:52:12AM +0800, Chen-Yu Tsai wrote:
> > On Tue, Jan 3, 2017 at 7:03 AM, Andre Przywara <andre.przywara@arm.com> wrote:
> > > +
> > > + mmc0_default_cd_pin: mmc0_cd_pin at 0 {
> > > + pins = "PF6";
> > > + function = "gpio_in";
> > > + bias-pull-up;
> > > + };
> >
> > We are starting to drop pinmux nodes for gpio usage.
>
> How do we get the equivalent of bias-pull-up/down and drive-strength if we
> run across a pin that needs it?

Hmm, that's actually a very good question...

For those cases, leave the pinctrl node for now, we'll deal with that
in due time

Maxime

--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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