Re: [PATCH v2 09/10] riscv: dts: add initial support for EIC7700 SoC

[Emil Renner Berthing]

Pinkesh Vaghela wrote:
> >
> > Hi Pinkesh,
> >
> > Thank your for the patches!
> >
> > Should this not be marked dma-noncoherent to avoid having to mark each
> > peripheral as such?
>
> Thanks for your feedback.
>
> We have not added "dma-noncoherent" because there are no DMA-capable
> peripherals in the devicetree yet.
> We planned to add this later when we add any DMA capable devices
> i.e. sdhci, gmac, sata, pcie, spi.
>
> Do you recommend to add this property in current version?

Yeah, Conor also answered this already.

> > > +             gpio@51600000 {
> > > +                     compatible = "snps,dw-apb-gpio";
> > > +                     reg = <0x0 0x51600000 0x0 0x80>;
> > > +                     #address-cells = <1>;
> > > +                     #size-cells = <0>;
> > > +
> > > +                     porta: gpio-port@0 {
> >
> > Maybe these labels could be something like gpioA, gpioB, etc. to not be
> > confused with an HDMI port fx.
>
> The gpio node labels are based on the example provided in
> "snps,dw-apb-gpio.yaml" dt-binding and other dtsi.
>
> Could you clarify more on how these labels cause confusion with HDMI
> port as I don't see any example for HDMI port using name as porta, portb?

Sure. Try git grep 'port.*:' -- '*.dts*' and you'll see that "port" labels are
used for many things that aren't GPIOs. It'll be a lot easier to scan through
the device tree and see what <&gpioA 27 0> references.

/Emil