0001 # SPDX-License-Identifier: GPL-2.0
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/dma/dma-router.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: DMA Router Generic Binding
0008
0009 maintainers:
0010 - Vinod Koul <vkoul@kernel.org>
0011
0012 allOf:
0013 - $ref: "dma-common.yaml#"
0014
0015 description:
0016 DMA routers are transparent IP blocks used to route DMA request
0017 lines from devices to the DMA controller. Some SoCs (like TI DRA7x)
0018 have more peripherals integrated with DMA requests than what the DMA
0019 controller can handle directly.
0020
0021 properties:
0022 $nodename:
0023 pattern: "^dma-router(@.*)?$"
0024
0025 dma-masters:
0026 $ref: /schemas/types.yaml#/definitions/phandle-array
0027 items:
0028 maxItems: 1
0029 description:
0030 Array of phandles to the DMA controllers the router can direct
0031 the signal to.
0032
0033 dma-requests:
0034 description:
0035 Number of incoming request lines the router can handle.
0036
0037 required:
0038 - "#dma-cells"
0039 - dma-masters
0040
0041 additionalProperties: true
0042
0043 examples:
0044 - |
0045 sdma_xbar: dma-router@4a002b78 {
0046 compatible = "ti,dra7-dma-crossbar";
0047 reg = <0x4a002b78 0xfc>;
0048 #dma-cells = <1>;
0049 dma-requests = <205>;
0050 ti,dma-safe-map = <0>;
0051 dma-masters = <&sdma>;
0052 };
0053
0054 ...
