linux-kernel - Re: [PATCH v9 3/5] ARM: dts: Renesas R9A06G032 base device tree file

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Message-ID: <CAMuHMdXamhn2GZs41i=wHXSRn0HgeHg4=7=g7pg7uni3LizK9w@mail.gmail.com>
Date:   Fri, 22 Jun 2018 14:14:30 +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>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        linux-clk <linux-clk@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Marc Zyngier <Marc.Zyngier@....com>
Subject: Re: [PATCH v9 3/5] ARM: dts: Renesas R9A06G032 base device tree file

Hi Michel,

CC MarcZ

On Thu, Jun 14, 2018 at 1:02 PM Michel Pollet
<michel.pollet@...renesas.com> wrote:
> This adds the Renesas R9A06G032 bare bone support.
>
> This currently only handles the SYSCTRL block note,
> generic parts (gic, architected timer) and a UART.
>
> Signed-off-by: Michel Pollet <michel.pollet@...renesas.com>

> --- /dev/null
> +++ b/arch/arm/boot/dts/r9a06g032.dtsi

> +       timer {
> +               compatible = "arm,cortex-a7-timer",

Checkpatch says:
WARNING: DT compatible string "arm,cortex-a7-timer" appears
un-documented -- check ./Documentation/devicetree/bindings/

> +                            "arm,armv7-timer";

Documentation/devicetree/bindings/arm/arch_timer.txt says:

    compatible should at least contain "arm,armv7-timer"

but fails to list other possible values?

> +               interrupt-parent = <&gic>;
> +               arm,cpu-registers-not-fw-configured;
> +               always-on;
> +               interrupts =
> +                       <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
> +                       <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
> +                       <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>,
> +                       <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_LEVEL_LOW)>;
> +       };

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