[PATCH v2 13/21] dts: mtmips: add alternative pinmux node for uart2

[Weijie Gao]

On Fri, 2020-01-17 at 15:50 +0100, Stefan Roese wrote:
> Added Mauro to Cc
> 
> On 17.01.20 08:46, Weijie Gao wrote:
> > This patch adds a new pinmux for UART2, which shares the pins with SPIS.
> > 
> > Signed-off-by: Weijie Gao <weijie.gao at mediatek.com>
> > ---
> > Changes since v1: newly added
> > ---
> >   arch/mips/dts/mt7628a.dtsi | 5 +++++
> >   1 file changed, 5 insertions(+)
> > 
> > diff --git a/arch/mips/dts/mt7628a.dtsi b/arch/mips/dts/mt7628a.dtsi
> > index 744594c45a..f265cb6ad9 100644
> > --- a/arch/mips/dts/mt7628a.dtsi
> > +++ b/arch/mips/dts/mt7628a.dtsi
> > @@ -93,6 +93,11 @@
> >   				function = "uart2";
> >   			};
> >   
> > +			uart2_pwm_pins: uart2_pwm_pins {
> > +				groups = "spis";
> > +				function = "pwm_uart2";
> > +			};
> > +
> 
> Thanks. AFAIK, this will not be used by any of the currently supported
> boards. Is this correct?

Yes.

> 
> Mauro is currently trying to port mainline U-Boot to the VoCore2 board
> which also uses UART2. I did not look to close, but might this pin mux
> option here be necessary for this VoCore2 board?

Yes. I added this because of your discussions about the pinmux.
I've tested this pinmux and it worked well. I believe it's necessary for
the VoCore2.

> 
> Thanks,
> Stefan