Hi Michel,
On Thu, May 24, 2018 at 11:28 AM, Michel Pollet
<michel.pollet@xxxxxxxxxxxxxx> wrote:
> The Renesas R9A06G032 SYSCTRL node description.
>
> Signed-off-by: Michel Pollet <michel.pollet@xxxxxxxxxxxxxx>
Thanks for your patch!
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.txt
> @@ -0,0 +1,32 @@
> +* Renesas R9A06G032 SYSCTRL
> +
> +Required Properties:
> +
> + - compatible: Must be:
> + - "renesas,r9a06g032-sysctrl"
> + - reg: Base address and length of the SYSCTRL IO block.
> + - #clock-cells: Must be 1
No clocks/clock-names for the external clock inputs?
"RZ/N1 has 3 clock sources, 1 reference clock inputs for RGMII, and 2
reference clock outputs for RMII/MII."
Given the documentation explicitly mentions the module clocks are to be
used for power-management, you may want to add #power-domain-cells as well,
and let the driver register clock domain. But that can be added later
(although it will break backwards compatibility with old DTBs).
As PWRCTRL_* registers allow to reset individual modules, #reset-cells is
another thing to add later. It's good to start thinking early about how to
reference resets, though.
E.g. on other Renesas-SoCs, module resets uses the same numerical
references as module clocks.
> +
> +Examples
> +--------
> +
> + - SYSCTRL node:
> +
> + sysctrl: sysctrl@4000c000 {
system-controller@
> + compatible = "renesas,r9a06g032-sysctrl";
> + reg = <0x4000c000 0x1000>;
> + #clock-cells = <1>;
> + };
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
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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