Maxime Ripard <maxime@xxxxxxxxxx> 于2020年11月6日周五 上午1:10写道：
>
> On Wed, Nov 04, 2020 at 04:07:48PM +0800, Yu-Tung Chang wrote:
> > > > +&uart1 {
> > > > + pinctrl-names = "default";
> > > > + pinctrl-0 = <&uart1_pins>;
> > >
> > > This should be already set in the DTSI
> > >
> > uart0 as the debugging interface, uart1 as the external uart port,
> > uart3 as the bluetooth.
>
> What I mean is that since it's the only muxing option, the pinctrl
> properties should already be set in the DTSI, so it's redundant to put
> them in the DTS.
>
I can only see the definition of uart0 in the DTSI,
because uart1 as the extension interface is exclusive to NanoPi R1.
> Maxime
