On Thu, Jun 16, 2016 at 12:27 PM, Geert Uytterhoeven
<geert+renesas@xxxxxxxxx> wrote:
> From: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
>
> Add DT binding documentation for the APMU hardware and add "renesas,apmu"
> to the list of enable methods for the ARM cpus.
>
> Signed-off-by: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> Cc: devicetree@xxxxxxxxxxxxxxx
> ---
> v4:
> - s/reigsters/registers/,
> - Use "renesas,<soctype>-apmu" instead of "renesas,apmu-<soctype>",
>
> v3:
> - s/Until/Unit/g,
>
> v2:
> - No changes.
> ---
> Documentation/devicetree/bindings/arm/cpus.txt | 1 +
> .../devicetree/bindings/power/renesas,apmu.txt | 31 ++++++++++++++++++++++
> 2 files changed, 32 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/power/renesas,apmu.txt
>
> diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt
> index 3f0cbbb8395f84ef..fa7520eb6387edbe 100644
> --- a/Documentation/devicetree/bindings/arm/cpus.txt
> +++ b/Documentation/devicetree/bindings/arm/cpus.txt
> @@ -204,6 +204,7 @@ nodes to be present and contain the properties described below.
> "qcom,gcc-msm8660"
> "qcom,kpss-acc-v1"
> "qcom,kpss-acc-v2"
> + "renesas,apmu"
Any Acked-by from the ARM people?
Thanks!
> "rockchip,rk3036-smp"
> "rockchip,rk3066-smp"
> "ste,dbx500-smp"
> diff --git a/Documentation/devicetree/bindings/power/renesas,apmu.txt b/Documentation/devicetree/bindings/power/renesas,apmu.txt
> new file mode 100644
> index 0000000000000000..84404c9edff73d97
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/renesas,apmu.txt
> @@ -0,0 +1,31 @@
> +DT bindings for the Renesas Advanced Power Management Unit
> +
> +Renesas R-Car line of SoCs utilize one or more APMU hardware units
> +for CPU core power domain control including SMP boot and CPU Hotplug.
> +
> +Required properties:
> +
> +- compatible: Should be "renesas,<soctype>-apmu", "renesas,apmu" as fallback.
> + Examples with soctypes are:
> + - "renesas,r8a7790-apmu" (R-Car H2)
> + - "renesas,r8a7791-apmu" (R-Car M2-W)
> + - "renesas,r8a7792-apmu" (R-Car V2H)
> + - "renesas,r8a7793-apmu" (R-Car M2-N)
> + - "renesas,r8a7794-apmu" (R-Car E2)
> +
> +- reg: Base address and length of the I/O registers used by the APMU.
> +
> +- cpus: This node contains a list of CPU cores, which should match the order
> + of CPU cores used by the WUPCR and PSTR registers in the Advanced Power
> + Management Unit section of the device's datasheet.
> +
> +
> +Example:
> +
> +This shows the r8a7791 APMU that can control CPU0 and CPU1.
> +
> + apmu@e6152000 {
> + compatible = "renesas,r8a7791-apmu", "renesas,apmu";
> + reg = <0 0xe6152000 0 0x188>;
> + cpus = <&cpu0 &cpu1>;
> + };
> --
> 1.9.1
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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