linux-kernel - Re: [PATCH v2] clk-rcar-gen2: RCAN clock support

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Message-ID: <CAMuHMdX7Efi1s1bt+X8rbqN4=J9JHWh1cHpvZmnC6NCkF4JVGA@mail.gmail.com>
Date:	Mon, 5 Jan 2015 14:33:41 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:	Mike Turquette <mturquette@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Linux-sh list <linux-sh@...r.kernel.org>,
	Pavel Kiryukhin <vksavl@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2] clk-rcar-gen2: RCAN clock support

On Wed, Dec 24, 2014 at 11:17 PM, Sergei Shtylyov
<sergei.shtylyov@...entembedded.com> wrote:
> Add the RCAN clock support to the R-Car generation 2 CPG driver.  This clock
> gets derived from  the USB_EXTAL clock, dividing  it by 6.  The layout of the
> RCANCKCR register is similar to those of the clocks supported by the 'clk-div6'
> driver but has no divider field, and so can't be supported by that driver...
>
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>

Sorry, forgot something...

> Index: linux/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt
> ===================================================================
> --- linux.orig/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt
> +++ linux/Documentation/devicetree/bindings/clock/renesas,rcar-gen2-cpg-clocks.txt
> @@ -16,7 +16,7 @@ Required Properties:
>    - clocks: Reference to the parent clock

If the "rcan" clock is to be used, there should be two parent clocks.

>    - #clock-cells: Must be 1
>    - clock-output-names: The names of the clocks. Supported clocks are "main",
> -    "pll0", "pll1", "pll3", "lb", "qspi", "sdh", "sd0", "sd1" and "z"
> +    "pll0", "pll1", "pll3", "lb", "qspi", "sdh", "sd0", "sd1", "z", and "rcan"

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
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