1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun%YAML 1.2 3*4882a593Smuzhiyun--- 4*4882a593Smuzhiyun$id: http://devicetree.org/schemas/dma/dma-router.yaml# 5*4882a593Smuzhiyun$schema: http://devicetree.org/meta-schemas/core.yaml# 6*4882a593Smuzhiyun 7*4882a593Smuzhiyuntitle: DMA Router Generic Binding 8*4882a593Smuzhiyun 9*4882a593Smuzhiyunmaintainers: 10*4882a593Smuzhiyun - Vinod Koul <vkoul@kernel.org> 11*4882a593Smuzhiyun 12*4882a593SmuzhiyunallOf: 13*4882a593Smuzhiyun - $ref: "dma-common.yaml#" 14*4882a593Smuzhiyun 15*4882a593Smuzhiyundescription: 16*4882a593Smuzhiyun DMA routers are transparent IP blocks used to route DMA request 17*4882a593Smuzhiyun lines from devices to the DMA controller. Some SoCs (like TI DRA7x) 18*4882a593Smuzhiyun have more peripherals integrated with DMA requests than what the DMA 19*4882a593Smuzhiyun controller can handle directly. 20*4882a593Smuzhiyun 21*4882a593Smuzhiyunproperties: 22*4882a593Smuzhiyun $nodename: 23*4882a593Smuzhiyun pattern: "^dma-router(@.*)?$" 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun dma-masters: 26*4882a593Smuzhiyun $ref: /schemas/types.yaml#definitions/phandle-array 27*4882a593Smuzhiyun description: 28*4882a593Smuzhiyun Array of phandles to the DMA controllers the router can direct 29*4882a593Smuzhiyun the signal to. 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun dma-requests: 32*4882a593Smuzhiyun description: 33*4882a593Smuzhiyun Number of incoming request lines the router can handle. 34*4882a593Smuzhiyun 35*4882a593Smuzhiyunrequired: 36*4882a593Smuzhiyun - "#dma-cells" 37*4882a593Smuzhiyun - dma-masters 38*4882a593Smuzhiyun 39*4882a593SmuzhiyunadditionalProperties: true 40*4882a593Smuzhiyun 41*4882a593Smuzhiyunexamples: 42*4882a593Smuzhiyun - | 43*4882a593Smuzhiyun sdma_xbar: dma-router@4a002b78 { 44*4882a593Smuzhiyun compatible = "ti,dra7-dma-crossbar"; 45*4882a593Smuzhiyun reg = <0x4a002b78 0xfc>; 46*4882a593Smuzhiyun #dma-cells = <1>; 47*4882a593Smuzhiyun dma-requests = <205>; 48*4882a593Smuzhiyun ti,dma-safe-map = <0>; 49*4882a593Smuzhiyun dma-masters = <&sdma>; 50*4882a593Smuzhiyun }; 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun... 53