linux-kernel - Re: [PATCH v2 5/8] riscv: dts: renesas: Add initial devicetree for Renesas RZ/Five SoC

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Message-ID: <CAMuHMdUSud4-0ercQe3cyg1RXqg4DKTfgvPh5wc8ibca6dyDKQ@mail.gmail.com>
Date:   Sat, 20 Aug 2022 14:07:28 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Conor Dooley <Conor.Dooley@...rochip.com>
Cc:     "Lad, Prabhakar" <prabhakar.mahadev-lad.rj@...renesas.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Anup Patel <anup@...infault.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Prabhakar Lad <prabhakar.csengg@...il.com>,
        Biju Das <biju.das.jz@...renesas.com>
Subject: Re: [PATCH v2 5/8] riscv: dts: renesas: Add initial devicetree for
 Renesas RZ/Five SoC

Hi Conor,

On Sat, Aug 20, 2022 at 10:49 AM <Conor.Dooley@...rochip.com> wrote:
> On 20/08/2022 09:45, Geert Uytterhoeven wrote:
> > On Fri, Aug 19, 2022 at 8:40 PM <Conor.Dooley@...rochip.com> wrote:
> >> On 15/08/2022 16:14, Lad Prabhakar wrote:
> >>> Add initial device tree for Renesas RZ/Five RISC-V CPU Core (AX45MP
> >>> Single).
> >>>
> >>> Below is the list of IP blocks added in the initial SoC DTSI which can be
> >>> used to boot via initramfs on RZ/Five SMARC EVK:
> >>> - AX45MP CPU
> >>> - CPG
> >>> - PINCTRL
> >>> - PLIC
> >>> - SCIF0
> >>> - SYSC
> >>>
> >>> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

> >> That aside, by convention so far we have put things like extals or
> >> reference clocks below the /cpus node. Could you do the same here too
> >> please?
> >
> > Really? We've been putting them at the root node for a long time,
> > since the separate "clocks" grouping subnode was deprecated.
> > The extal-clk is not even part of the SoC, so it should definitely
> > not be under the /cpus node.
>
> Under may have been a confusing choice of words, I meant "physically"
> under it in the file. Maybe after would have been a better choice of
> words? I wasn't suggesting you put it inside the CPUs node.
> Does that make more sense?

Oh right, you mean the order of the nodes. Yes, "extal-clk" should
be after "cpus", following alphabetical sort order, as the nodes have no
unit addresses.

Sorry for missing that in my review.  I also misread "below"
(in Dutch there is only a single word for "below" and "under" ;-)

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