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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/interrupt-controller/samsung,exynos4210-combiner.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Samsung Exynos SoC Interrupt Combiner Controller
maintainers:
- Krzysztof Kozlowski <krzk@kernel.org>
description: |
Samsung's Exynos4 architecture includes a interrupt combiner controller which
can combine interrupt sources as a group and provide a single interrupt
request for the group. The interrupt request from each group are connected to
a parent interrupt controller, such as GIC in case of Exynos4210.
The interrupt combiner controller consists of multiple combiners. Up to eight
interrupt sources can be connected to a combiner. The combiner outputs one
combined interrupt for its eight interrupt sources. The combined interrupt is
usually connected to a parent interrupt controller.
A single node in the device tree is used to describe the interrupt combiner
controller module (which includes multiple combiners). A combiner in the
interrupt controller module shares config/control registers with other
combiners. For example, a 32-bit interrupt enable/disable config register can
accommodate up to 4 interrupt combiners (with each combiner supporting up to
8 interrupt sources).
allOf:
- $ref: /schemas/interrupt-controller.yaml#
properties:
compatible:
const: samsung,exynos4210-combiner
interrupt-controller: true
interrupts:
minItems: 8
maxItems: 32
"#interrupt-cells":
description: |
The meaning of the cells are:
* First Cell: Combiner Group Number.
* Second Cell: Interrupt number within the group.
const: 2
reg:
maxItems: 1
samsung,combiner-nr:
description: |
The number of interrupt combiners supported. Should match number
of interrupts set in "interrupts" property.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 8
maximum: 32
default: 16
required:
- compatible
- interrupt-controller
- interrupts
- "#interrupt-cells"
- reg
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
interrupt-controller@10440000 {
compatible = "samsung,exynos4210-combiner";
interrupt-controller;
#interrupt-cells = <2>;
reg = <0x10440000 0x1000>;
interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
};
|
