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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/interrupt-controller/ti,irq-crossbar.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Texas Instruments IRQ Crossbar
maintainers:
- Sricharan R <r.sricharan@ti.com>
description:
Some socs have a large number of interrupts requests to service the needs of
its many peripherals and subsystems. All of the interrupt lines from the
subsystems are not needed at the same time, so they have to be muxed to the
irq-controller appropriately. In such places a interrupt controllers are
preceded by an CROSSBAR that provides flexibility in muxing the device
requests to the controller inputs.
properties:
compatible:
const: ti,irq-crossbar
reg:
maxItems: 1
interrupt-controller: true
'#interrupt-cells':
const: 3
ti,max-irqs:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Total number of irqs available at the parent interrupt controller.
minimum: 1
ti,max-crossbar-sources:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Maximum number of crossbar sources that can be routed.
minimum: 1
ti,reg-size:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Size of a individual register in bytes. Every individual
register is assumed to be of same size.
enum: [1, 2, 4]
ti,irqs-reserved:
$ref: /schemas/types.yaml#/definitions/uint32-array
description:
List of the reserved irq lines that are not muxed using crossbar. These
interrupt lines are reserved in the soc, so crossbar bar driver should not
consider them as free lines.
ti,irqs-skip:
$ref: /schemas/types.yaml#/definitions/uint32-array
description:
Similar to "ti,irqs-reserved", but these are for SOC-specific hard-wiring
of those irqs which unexpectedly bypasses the crossbar. These irqs have a
crossbar register, but still cannot be used.
ti,irqs-safe-map:
$ref: /schemas/types.yaml#/definitions/uint32
description:
integer which maps to a safe configuration to use when the interrupt
controller irq is unused.
default: 0
required:
- compatible
- reg
- interrupt-controller
- '#interrupt-cells'
- ti,max-irqs
- ti,max-crossbar-sources
- ti,reg-size
- ti,irqs-reserved
additionalProperties: false
examples:
- |
crossbar@4a002a48 {
compatible = "ti,irq-crossbar";
reg = <0x4a002a48 0x130>;
interrupt-controller;
#interrupt-cells = <3>;
ti,max-irqs = <160>;
ti,max-crossbar-sources = <400>;
ti,reg-size = <2>;
ti,irqs-reserved = <0 1 2 3 5 6 131 132>;
ti,irqs-skip = <10 133 139 140>;
};
|
