xref: /freebsd/sys/contrib/device-tree/Bindings/dma/renesas,rzn1-dmamux.yaml (revision b2d2a78ad80ec68d4a17f5aef97d21686cb1e29b) 
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