xref: /openbmc/linux/Documentation/devicetree/bindings/dma/renesas,rzn1-dmamux.yaml (revision 25ebbc57ca56df3cf9149e9da6b1d3169c8487db) 
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
7title: Renesas RZ/N1 DMA mux
8
9maintainers:
10  - Miquel Raynal <miquel.raynal@bootlin.com>
11
12allOf:
13  - $ref: dma-router.yaml#
14
15properties:
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
37required:
38  - reg
39  - dma-requests
40
41additionalProperties: false
42
43examples:
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    };
52