linux-kernel - Re: [PATCH v3 1/2] dt-bindings: clock: renesas,r9a06g032-sysctrl: Document power Domains

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Date:   Tue, 28 May 2019 09:28:55 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Gareth Williams <gareth.williams.jx@...esas.com>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Phil Edworthy <phil.edworthy@...esas.com>,
        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>
Subject: Re: [PATCH v3 1/2] dt-bindings: clock: renesas,r9a06g032-sysctrl:
 Document power Domains

Hi Gareth,

On Fri, May 24, 2019 at 5:32 PM Gareth Williams
<gareth.williams.jx@...esas.com> wrote:
> The driver is gaining power domain support, so add the new property
> to the DT binding and update the examples.
>
> Signed-off-by: Gareth Williams <gareth.williams.jx@...esas.com>

Thanks for your patch!

> --- a/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.txt
> +++ b/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.txt
@@ -40,4 +42,5 @@ Examples
>                 reg-io-width = <4>;
>                 clocks = <&sysctrl R9A06G032_CLK_UART0>;
>                 clock-names = "baudclk";
> +               power-domains = <&sysctrl>;

This is an interesting example: according to the driver,
R9A06G032_CLK_UART0, is not clock used for power management?

Oh, the real uart0 node in arch/arm/boot/dts/r9a06g032.dtsi uses

    clocks = <&sysctrl R9A06G032_CLK_UART0>, <&sysctrl R9A06G032_HCLK_UART0>;
    clock-names = "baudclk", "apb_pclk";

That does make sense...

With the above fixed:
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

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