Re: [PATCH 7/7] arm64: dts: renesas: r8a779md: Add support for R-Car M3Le R8A779MD Geist

[Marek Vasut]

On 5/4/26 11:24 AM, Geert Uytterhoeven wrote:

Hello Geert,

> > > Do we need these two? We don't have them in e.g.
> > > arch/arm64/boot/dts/renesas/salvator-common.dtsi
> >
> > I believe we should add them, the KSZ9031 PHY does require 100us delay
> > after reset is deasserted and before MDIO access is possible:
> >
> > https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/DataSheets/KSZ9031RNX-Data-Sheet-DS00002117.pdf
> >
> > FIGURE 7-5: POWER-UP/POWER-DOWN/RESET TIMING
> >
> > "
> > Note 2: After the de-assertion of reset, wait a minimum of 100 µs before
> > starting programming on the MIIM (MDC/MDIO)
> > interface
> > "
>
> OK. So please add it to the other boards, too.

Will do.

> > [...]
> >
> > > > +       pwm2_pins: pwm2 {
> > > > +               groups = "pwm2_a";
> > > > +               function = "pwm2";
> > > > +       };
> > >
> > > What is pwm2 used for?
> >
> > The signal is accessible on the EXIO connector D (LBSC) .
> > It is up to user to use the pin for their purposes.
>
> Usually we do not enable support for random user wirings on EXIO connectors.
I'll remove that in V3, thanks !