From 079f4532008e21d40a2c43eb32df0fdf7d8dbddc Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Mon, 1 Oct 2018 16:13:55 +0200 Subject: [PATCH] dt-bindings/interrupt-controller: Add documentation for Marvell SEI controller Describe the System Error Interrupt (SEI) controller. It aggregates two types of interrupts, wired and MSIs from respectively the AP and the CPs, into a single SPI interrupt. Suggested-by: Haim Boot Reviewed-by: Rob Herring Signed-off-by: Miquel Raynal Signed-off-by: Marc Zyngier --- .../bindings/interrupt-controller/marvell,sei.txt | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/marvell,sei.txt diff --git a/Documentation/devicetree/bindings/interrupt-controller/marvell,sei.txt b/Documentation/devicetree/bindings/interrupt-controller/marvell,sei.txt new file mode 100644 index 0000000..0beafed --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/marvell,sei.txt @@ -0,0 +1,36 @@ +Marvell SEI (System Error Interrupt) Controller +----------------------------------------------- + +Marvell SEI (System Error Interrupt) controller is an interrupt +aggregator. It receives interrupts from several sources and aggregates +them to a single interrupt line (an SPI) on the parent interrupt +controller. + +This interrupt controller can handle up to 64 SEIs, a set comes from the +AP and is wired while a second set comes from the CPs by the mean of +MSIs. + +Required properties: + +- compatible: should be one of: + * "marvell,ap806-sei" +- reg: SEI registers location and length. +- interrupts: identifies the parent IRQ that will be triggered. +- #interrupt-cells: number of cells to define an SEI wired interrupt + coming from the AP, should be 1. The cell is the IRQ + number. +- interrupt-controller: identifies the node as an interrupt controller + for AP interrupts. +- msi-controller: identifies the node as an MSI controller for the CPs + interrupts. + +Example: + + sei: interrupt-controller@3f0200 { + compatible = "marvell,ap806-sei"; + reg = <0x3f0200 0x40>; + interrupts = ; + #interrupt-cells = <1>; + interrupt-controller; + msi-controller; + }; -- 2.7.4