[PATCH 1/3] dt-bindings: interrupt-controller: Actions external interrupt controller
From: robh@kernel.org (Rob Herring)
Date: 2018-07-31 22:13:45
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linux-devicetree, lkml
On Tue, Jul 24, 2018 at 05:02:17PM +0200, Parthiban Nallathambi wrote:
quoted hunk ↗ jump to hunk
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.txtdiff --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)
Need to state there are 3 interrupts.
+- sampling-rate-24m: this means the external controller's interrupts can be
Needs a vendor prefix.
+ 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