| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/dma/renesas,rzn1-dmamux.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Renesas RZ/N1 DMA mux |
| 8 | |
| 9 | maintainers: |
| 10 | - Miquel Raynal <miquel.raynal@bootlin.com> |
| 11 | |
| 12 | allOf: |
| 13 | - $ref: dma-router.yaml# |
| 14 | |
| 15 | properties: |
| 16 | compatible: |
| 17 | const: renesas,rzn1-dmamux |
| 18 | |
| 19 | reg: |
| 20 | maxItems: 1 |
| 21 | description: DMA mux first register offset within the system control parent. |
| 22 | |
| 23 | '#dma-cells': |
| 24 | const: 6 |
| 25 | description: |
| 26 | The first four cells are dedicated to the master DMA controller. The fifth |
| 27 | cell gives the DMA mux bit index that must be set starting from 0. The |
| 28 | sixth cell gives the binary value that must be written there, ie. 0 or 1. |
| 29 | |
| 30 | dma-masters: |
| 31 | minItems: 1 |
| 32 | maxItems: 2 |
| 33 | |
| 34 | dma-requests: |
| 35 | const: 32 |
| 36 | |
| 37 | required: |
| 38 | - reg |
| 39 | - dma-requests |
| 40 | |
| 41 | additionalProperties: false |
| 42 | |
| 43 | examples: |
| 44 | - | |
| 45 | dma-router@a0 { |
| 46 | compatible = "renesas,rzn1-dmamux"; |
| 47 | reg = <0xa0 4>; |
| 48 | #dma-cells = <6>; |
| 49 | dma-masters = <&dma0 &dma1>; |
| 50 | dma-requests = <32>; |
| 51 | }; |