Re: [PATCH RFC 3/5] arm64: dts: renesas: r9a07g043[u]: Add IRQC node

[Geert Uytterhoeven]

Hi Prabhakar,

On Mon, Nov 7, 2022 at 6:53 PM Prabhakar <prabhakar.csengg@xxxxxxxxx> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> Add IRQC node to R9A07G043 (RZ/G2UL) SoC DTSI.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Thanks for your patch!

> ---
> Note,
> - clocks and resets are differnt when compared to RZ/Five hence its added
>   in r9a07g043u.dtsi
> - We have additional interrupt on RZ/Five hence interrupts are added in
>   r9a07g043u.dtsi

Which additional interrupts?
Do you already have the r9a06g043f-variant ready, so we can compare?

> - clock-names is also added in r9a07g043u.dtsi to avoid dtbs_check warning

Why does this warn?

> --- a/arch/arm64/boot/dts/renesas/r9a07g043.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r9a07g043.dtsi
> @@ -538,6 +538,14 @@ pinctrl: pinctrl@11030000 {
>                                  <&cpg R9A07G043_GPIO_SPARE_RESETN>;
>                 };
>
> +               irqc: interrupt-controller@110a0000 {
> +                       #interrupt-cells = <2>;
> +                       #address-cells = <0>;
> +                       interrupt-controller;
> +                       reg = <0 0x110a0000 0 0x10000>;

The size of the "reg" property will be 0x20000 on RZ/Five, to cover the
extra [NIT]MSK registers, so I think this belongs in r9a07g043u.dtsi, too.

> +                       power-domains = <&cpg>;
> +               };
> +
>                 dmac: dma-controller@11820000 {
>                         compatible = "renesas,r9a07g043-dmac",
>                                      "renesas,rz-dmac";

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds