Add documentation about how to properly use the Ingenic TCU (Timer/Counter Unit) IRQ driver from devicetree.
Signed-off-by: Paul Cercueil <[email protected]> --- .../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>; + + tcu_irq: interrupt-controller { + compatible = "ingenic,jz4740-tcu-intc"; + reg = <0x10002020 0x20>; + + interrupt-controller; + #interrupt-cells = <1>; + + interrupt-parent = <&intc>; + interrupts = <15>; + }; + }; +}; -- 2.11.0
