[PATCH 1/3] dt-bindings: interrupt-controller: Actions external interrupt controller
From: Parthiban Nallathambi <hidden>
Date: 2018-07-24 15:03:05
Also in:
linux-devicetree, lkml
Subsystem:
irqchip drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Thomas Gleixner, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Actions Semi OWL family SoC's provides support for external interrupt controller to be connected and controlled using SIRQ pins. S500, S700 and S900 provides 3 SIRQ lines and works independently for 3 external interrupt controllers. Signed-off-by: Parthiban Nallathambi <redacted> Signed-off-by: Saravanan Sekar <sravanhome@gmail.com> --- .../interrupt-controller/actions,owl-sirq.txt | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/actions,owl-sirq.txt
diff --git a/Documentation/devicetree/bindings/interrupt-controller/actions,owl-sirq.txt b/Documentation/devicetree/bindings/interrupt-controller/actions,owl-sirq.txt
new file mode 100644
index 000000000000..c5f8a29573c8
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/actions,owl-sirq.txt@@ -0,0 +1,34 @@ +Actions Semi Owl SoCs SIRQ interrupt controller + +S500, S700 and S900 SoC's from Actions provides interface, in which external +interrupt controller can be connected. It has the following properties: + +- inputs three interrupt signal from external interrupt controller + +Required properties: + +- compatible: should be one of the following + "actions,s700-sirq" + "actions,s900-sirq" +- reg: physical base address of the controller and length of memory mapped. +- interrupt-controller: identifies the node as an interrupt controller +- #interrupt-cells: specifies the number of cells needed to encode an interrupt + source, should be 2. +- interrupts: specifies the interrupt line in the interrupt controller and + interrupt type (level or edge triggered) +- sampling-rate-24m: this means the external controller's interrupts can be + sampled at 24MHz. Sampling can be specified for each SIRQ lines, as an array + element. By default, all lines are sampled at 32KHz. + +Example: + +sirq: interrupt-controller at e01b0000 { + compatible = "actions,s700-sirq"; + reg = <0 0xe01b0000 0 0x1000>; + interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>; + interrupt-controller; + #interrupt-cells = <2>; + sampling-rate-24m = <0 0 1>; +};
--
2.14.4