From 0ea04c7322b0dbbc4e7a862451855b10ef9922d3 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Mon, 6 Nov 2017 18:34:36 +0000 Subject: dt-bindings: Add description of Socionext EXIU interrupt controller Add a description of the External Interrupt Unit (EXIU) interrupt controller as found on the Socionext SynQuacer SoC. Acked-by: Rob Herring Signed-off-by: Ard Biesheuvel Signed-off-by: Marc Zyngier --- .../socionext,synquacer-exiu.txt | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/socionext,synquacer-exiu.txt diff --git a/Documentation/devicetree/bindings/interrupt-controller/socionext,synquacer-exiu.txt b/Documentation/devicetree/bindings/interrupt-controller/socionext,synquacer-exiu.txt new file mode 100644 index 000000000000..8b2faefe29ca --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/socionext,synquacer-exiu.txt @@ -0,0 +1,32 @@ +Socionext SynQuacer External Interrupt Unit (EXIU) + +The Socionext Synquacer SoC has an external interrupt unit (EXIU) +that forwards a block of 32 configurable input lines to 32 adjacent +level-high type GICv3 SPIs. + +Required properties: + +- compatible : Should be "socionext,synquacer-exiu". +- reg : Specifies base physical address and size of the + control registers. +- interrupt-controller : Identifies the node as an interrupt controller. +- #interrupt-cells : Specifies the number of cells needed to encode an + interrupt source. The value must be 3. +- interrupt-parent : phandle of the GIC these interrupts are routed to. +- socionext,spi-base : The SPI number of the first SPI of the 32 adjacent + ones the EXIU forwards its interrups to. + +Notes: + +- Only SPIs can use the EXIU as an interrupt parent. + +Example: + + exiu: interrupt-controller@510c0000 { + compatible = "socionext,synquacer-exiu"; + reg = <0x0 0x510c0000 0x0 0x20>; + interrupt-controller; + interrupt-parent = <&gic>; + #interrupt-cells = <3>; + socionext,spi-base = <112>; + }; -- cgit v1.2.3