ubuntu-linux-kernel/Documentation/devicetree/bindings/media/tango-ir.txt

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Sigma Designs Tango IR NEC/RC-5/RC-6 decoder (SMP86xx and SMP87xx)
Required properties:
- compatible: "sigma,smp8642-ir"
- reg: address/size of NEC+RC5 area, address/size of RC6 area
- interrupts: spec for IR IRQ
- clocks: spec for IR clock (typically the crystal oscillator)
Optional properties:
- linux,rc-map-name: see Documentation/devicetree/bindings/media/rc.txt
Example:
ir@10518 {
compatible = "sigma,smp8642-ir";
reg = <0x10518 0x18>, <0x105e0 0x1c>;
interrupts = <21 IRQ_TYPE_EDGE_RISING>;
clocks = <&xtal>;
};