From mboxrd@z Thu Jan 1 00:00:00 1970 From: pn@denx.de (Parthiban Nallathambi) Date: Tue, 24 Jul 2018 17:02:17 +0200 Subject: [PATCH 1/3] dt-bindings: interrupt-controller: Actions external interrupt controller In-Reply-To: <20180724150219.1807724-1-pn@denx.de> References: <20180724150219.1807724-1-pn@denx.de> Message-ID: <20180724150219.1807724-2-pn@denx.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Signed-off-by: Saravanan Sekar --- .../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 = , + , + ; + interrupt-controller; + #interrupt-cells = <2>; + sampling-rate-24m = <0 0 1>; +}; -- 2.14.4