linux-kernel - Re: [PATCH] ARM: dts: renesas: Add boot phase tags marking to Renesas RZ/A1

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Message-ID: <CAMuHMdVUscsQEOiVUdwszM8LsiSx4FScHC+MY8hH7B_xtQHcUA@mail.gmail.com>
Date: Wed, 6 Aug 2025 11:11:26 +0200
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Marek Vasut <marek.vasut+renesas@...lbox.org>
Cc: linux-arm-kernel@...ts.infradead.org, Conor Dooley <conor+dt@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Magnus Damm <magnus.damm@...il.com>, 
	Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH] ARM: dts: renesas: Add boot phase tags marking to Renesas RZ/A1

Hi Marek,

On Mon, 30 Jun 2025 at 00:05, Marek Vasut
<marek.vasut+renesas@...lbox.org> wrote:
> bootph-all as phase tag was added to dt-schema (dtschema/schemas/bootph.yaml)
> to describe various node usage during boot phases with DT. Add bootph-all for
> all nodes that are used in the bootloader on Renesas RZ/A1 SoC.
>
> All SoC require BSC bus, PFC pin control and OSTM0 timer access during all
> stages of the boot process, those are marked using bootph-all property, and
> so is the SoC bus node which contains the PFC and OSTM IPs.
>
> Each board console UART is also marked as bootph-all to make it available in
> all stages of the boot process.
>
> Signed-off-by: Marek Vasut <marek.vasut+renesas@...lbox.org>

Thanks for your patch!

> --- a/arch/arm/boot/dts/renesas/r7s72100.dtsi
> +++ b/arch/arm/boot/dts/renesas/r7s72100.dtsi
> @@ -41,6 +41,7 @@ bsc: bus {
>                 #address-cells = <1>;
>                 #size-cells = <1>;
>                 ranges = <0 0 0x18000000>;
> +               bootph-all;
>         };
>
>         cpus {
> @@ -108,6 +109,8 @@ soc {
>                 #size-cells = <1>;
>                 ranges;
>

Please drop this blank line.

> +               bootph-all;
> +
>                 L2: cache-controller@...ff000 {
>                         compatible = "arm,pl310-cache";
>                         reg = <0x3ffff000 0x1000>;
> @@ -639,6 +643,7 @@ ostm0: timer@...ec000 {
>                         interrupts = <GIC_SPI 102 IRQ_TYPE_EDGE_RISING>;
>                         clocks = <&mstp5_clks R7S72100_CLK_OSTM0>;
>                         power-domains = <&cpg_clocks>;
> +                       bootph-all;

Please move this to the board-specific .dts files, where this node
is enabled.

>                         status = "disabled";
>                 };
>

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