63 lines · yaml
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/dma/socionext,uniphier-xdmac.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Socionext UniPhier external DMA controller8 9description: |10 This describes the devicetree bindings for an external DMA engine to perform11 memory-to-memory or peripheral-to-memory data transfer capable of supporting12 16 channels, implemented in Socionext UniPhier SoCs.13 14maintainers:15 - Kunihiko Hayashi <hayashi.kunihiko@socionext.com>16 17allOf:18 - $ref: dma-controller.yaml#19 20properties:21 compatible:22 const: socionext,uniphier-xdmac23 24 reg:25 maxItems: 126 27 interrupts:28 maxItems: 129 30 "#dma-cells":31 const: 232 description: |33 DMA request from clients consists of 2 cells:34 1. Channel index35 2. Transfer request factor number, If no transfer factor, use 0.36 The number is SoC-specific, and this should be specified with37 relation to the device to use the DMA controller.38 39 dma-channels:40 minimum: 141 maximum: 1642 43additionalProperties: false44 45required:46 - compatible47 - reg48 - interrupts49 - "#dma-cells"50 - dma-channels51 52examples:53 - |54 xdmac: dma-controller@5fc10000 {55 compatible = "socionext,uniphier-xdmac";56 reg = <0x5fc10000 0x5300>;57 interrupts = <0 188 4>;58 #dma-cells = <2>;59 dma-channels = <16>;60 };61 62...63