linux-kernel - Re: [PATCH v6 4/6] ARM: dts: Renesas RZ/N1 SoC base device tree file

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Date:   Wed, 23 May 2018 11:12:07 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Michel Pollet <michel.pollet@...renesas.com>
Cc:     Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Simon Horman <horms@...ge.net.au>,
        Phil Edworthy <phil.edworthy@...esas.com>,
        Michel Pollet <buserror+upstream@...il.com>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>
Subject: Re: [PATCH v6 4/6] ARM: dts: Renesas RZ/N1 SoC base device tree file

Hi Michel,

On Tue, May 22, 2018 at 12:01 PM, Michel Pollet
<michel.pollet@...renesas.com> wrote:
> This adds the Renesas RZ/N1D (Part #R9A06G032) SoC bare
> bone support.
>
> This currently only handles generic parts (gic, architected timer)
> and a UART.
> For simplicity sake, this also relies on the bootloader to set the
> pinctrl and clocks.
>
> Signed-off-by: Michel Pollet <michel.pollet@...renesas.com>

Thanks for your patch!

> --- /dev/null
> +++ b/arch/arm/boot/dts/r9a06g032.dtsi
> @@ -0,0 +1,86 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Base Device Tree Source for the Renesas RZ/N1D (R9A06G032)
> + *
> + * Copyright (C) 2018 Renesas Electronics Europe Limited
> + *
> + */
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/clock/rzn1-clock.h>
> +
> +/ {
> +       compatible = "renesas,r9a06g032", "renesas,rzn1";

Please drop the "renesas,rzn1".


> +       #address-cells = <1>;
> +       #size-cells = <1>;
> +
> +       cpus {
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +               clocks = <&clock RZN1_DIV_CA7>;

I think the clocks property should be moved to the individual CPU nodes.

> +
> +               cpu@0 {
> +                       device_type = "cpu";
> +                       compatible = "arm,cortex-a7";
> +                       reg = <0>;
> +               };
> +
> +               cpu@1 {
> +                       device_type = "cpu";
> +                       compatible = "arm,cortex-a7";
> +                       reg = <1>;
> +               };
> +       };

The rest looks OK to me (pending acceptance of the clock bindings).

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