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

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Message-ID: <CAMuHMdWgCdR8E+bgAprfSmL3S-1aY2R7frba9du-XfCeEV7T0g@mail.gmail.com>
Date:   Thu, 17 Nov 2022 12:13:16 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Prabhakar <prabhakar.csengg@...il.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Biju Das <biju.das.jz@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH RFC 3/5] arm64: dts: renesas: r9a07g043[u]: Add IRQC node

Hi Prabhakar,

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

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@...30000 {
>                                  <&cpg R9A07G043_GPIO_SPARE_RESETN>;
>                 };
>
> +               irqc: interrupt-controller@...a0000 {
> +                       #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@...20000 {
>                         compatible = "renesas,r9a07g043-dmac",
>                                      "renesas,rz-dmac";

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

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