162306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0 262306a36Sopenharmony_ci%YAML 1.2 362306a36Sopenharmony_ci--- 462306a36Sopenharmony_ci$id: http://devicetree.org/schemas/dma/dma-router.yaml# 562306a36Sopenharmony_ci$schema: http://devicetree.org/meta-schemas/core.yaml# 662306a36Sopenharmony_ci 762306a36Sopenharmony_cititle: DMA Router Common Properties 862306a36Sopenharmony_ci 962306a36Sopenharmony_cimaintainers: 1062306a36Sopenharmony_ci - Vinod Koul <vkoul@kernel.org> 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ciallOf: 1362306a36Sopenharmony_ci - $ref: dma-common.yaml# 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_cidescription: 1662306a36Sopenharmony_ci DMA routers are transparent IP blocks used to route DMA request 1762306a36Sopenharmony_ci lines from devices to the DMA controller. Some SoCs (like TI DRA7x) 1862306a36Sopenharmony_ci have more peripherals integrated with DMA requests than what the DMA 1962306a36Sopenharmony_ci controller can handle directly. 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_ciproperties: 2262306a36Sopenharmony_ci $nodename: 2362306a36Sopenharmony_ci pattern: "^dma-router(@.*)?$" 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ci dma-masters: 2662306a36Sopenharmony_ci $ref: /schemas/types.yaml#/definitions/phandle-array 2762306a36Sopenharmony_ci items: 2862306a36Sopenharmony_ci maxItems: 1 2962306a36Sopenharmony_ci description: 3062306a36Sopenharmony_ci Array of phandles to the DMA controllers the router can direct 3162306a36Sopenharmony_ci the signal to. 3262306a36Sopenharmony_ci 3362306a36Sopenharmony_ci dma-requests: 3462306a36Sopenharmony_ci description: 3562306a36Sopenharmony_ci Number of incoming request lines the router can handle. 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_cirequired: 3862306a36Sopenharmony_ci - "#dma-cells" 3962306a36Sopenharmony_ci - dma-masters 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ciadditionalProperties: true 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_ciexamples: 4462306a36Sopenharmony_ci - | 4562306a36Sopenharmony_ci sdma_xbar: dma-router@4a002b78 { 4662306a36Sopenharmony_ci compatible = "ti,dra7-dma-crossbar"; 4762306a36Sopenharmony_ci reg = <0x4a002b78 0xfc>; 4862306a36Sopenharmony_ci #dma-cells = <1>; 4962306a36Sopenharmony_ci dma-requests = <205>; 5062306a36Sopenharmony_ci ti,dma-safe-map = <0>; 5162306a36Sopenharmony_ci dma-masters = <&sdma>; 5262306a36Sopenharmony_ci }; 5362306a36Sopenharmony_ci 5462306a36Sopenharmony_ci... 55