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SubjectRe: [PATCH v2 16/17] sh: I/O DATA HDL-U (a.k.a. landisk) Device Tree
Hi Sato-san,

On Sun, Jun 12, 2016 at 8:54 AM, Yoshinori Sato
<ysato@users.sourceforge.jp> wrote:
> --- /dev/null
> +++ b/arch/sh/boot/dts/landisk.dts
> @@ -0,0 +1,150 @@

> + pllclk: pllclk {
> + compatible = "renesas,sh7750-pll-clock";
> + clocks = <&oclk>;
> + #clock-cells = <0>;
> + renesas,mult = <12>;
> + reg = <0xffc00000 2>, <0xffc00008 4>;
> + };
> + iclk: iclk {
> + compatible = "renesas,sh7750-div-clock";
> + clocks = <&pllclk>;
> + #clock-cells = <0>;
> + reg = <0xffc00000 2>;
> + renesas,offset = <6>;
> + clock-output-names = "ick";

clock-output-names is deprecated for clocks providing a single output.

> + };
> + bclk: bclk {
> + compatible = "renesas,sh7750-div-clock";
> + clocks = <&pllclk>;
> + #clock-cells = <0>;
> + reg = <0xffc00000 2>;
> + renesas,offset = <3>;
> + clock-output-names = "bck";
> + };
> + fclk: fclk {
> + compatible = "renesas,sh7750-div-clock";
> + clocks = <&pllclk>;
> + #clock-cells = <0>;
> + reg = <0xffc00000 2>;
> + renesas,offset = <0>;
> + clock-output-names = "fck";
> + };

I think it will be much easier for maintenance and code reuse to just have a
single "cpg" node that's compatible with "renesas,sh7750-cpg", covering all
CPG registers. Especially since the various clocks use the same registers.

Cfr. drivers/clk/renesas/cpg-mssr.c.

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-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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