On Wed, Jan 10, 2018 at 11:48:32PM +0100, Paul Cercueil wrote:
> Add documentation about how to properly use the Ingenic TCU
> (Timer/Counter Unit) IRQ driver from devicetree.
Drop "doc: " from the subject in this and others.
> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> ---
> .../bindings/interrupt-controller/ingenic,tcu.txt | 33 ++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/interrupt-controller/ingenic,tcu.txt
>
> v3: New patch in this series
>
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/ingenic,tcu.txt b/Documentation/devicetree/bindings/interrupt-controller/ingenic,tcu.txt
> new file mode 100644
> index 000000000000..e3a7d2354172
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interrupt-controller/ingenic,tcu.txt
> @@ -0,0 +1,33 @@
> +Ingenic SoCs Timer/Counter Unit Interrupt Controller
> +
> +Required properties:
> +
> +- compatible : should be "ingenic,<socname>-tcu-intc". Valid strings are:
> + * ingenic,jz4740-tcu-intc
> + * ingenic,jz4770-tcu-intc
> + * ingenic,jz4780-tcu-intc
> +- interrupt-controller : Identifies the node as an interrupt controller
> +- #interrupt-cells : Specifies the number of cells needed to encode an
> + interrupt source. The value shall be 1.
> +- interrupt-parent : phandle of the interrupt controller.
> +- interrupts : Specifies the interrupt the controller is connected to.
> +
> +Example:
> +
> +/ {
> + mfd@10002000 {
> + compatible = "ingenic,tcu", "simple-mfd", "syscon";
> + reg = <0x10002000 0x1000>;
Need a "ranges;" here. Better yet make ranges translate child address 0
to 0x10002000 base.
> +
> + tcu_irq: interrupt-controller {
Need a unit-address. Building with W=1 will tell you this (assuming this
is cut-n-paste from your dts).
interrupt-controlleer@10002020 (or @20 with a ranges translation)
> + compatible = "ingenic,jz4740-tcu-intc";
> + reg = <0x10002020 0x20>;
> +
> + interrupt-controller;
> + #interrupt-cells = <1>;
> +
> + interrupt-parent = <&intc>;
> + interrupts = <15>;
> + };
> + };
> +};
> --
> 2.11.0
>
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