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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/dma-router.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: DMA Router Generic Binding
maintainers:
- Vinod Koul <vkoul@kernel.org>
allOf:
- $ref: "dma-common.yaml#"
description:
DMA routers are transparent IP blocks used to route DMA request
lines from devices to the DMA controller. Some SoCs (like TI DRA7x)
have more peripherals integrated with DMA requests than what the DMA
controller can handle directly.
properties:
$nodename:
pattern: "^dma-router(@.*)?$"
dma-masters:
$ref: /schemas/types.yaml#definitions/phandle-array
description:
Array of phandles to the DMA controllers the router can direct
the signal to.
dma-requests:
description:
Number of incoming request lines the router can handle.
required:
- "#dma-cells"
- dma-masters
additionalProperties: true
examples:
- |
sdma_xbar: dma-router@4a002b78 {
compatible = "ti,dra7-dma-crossbar";
reg = <0x4a002b78 0xfc>;
#dma-cells = <1>;
dma-requests = <205>;
ti,dma-safe-map = <0>;
dma-masters = <&sdma>;
};
...
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