xref: /linux/Documentation/devicetree/bindings/dma/renesas,usb-dmac.yaml (revision 69bfec7548f4c1595bac0e3ddfc0458a5af31f4c) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/dma/renesas,usb-dmac.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas USB DMA Controller
8
9maintainers:
10  - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
11
12allOf:
13  - $ref: dma-controller.yaml#
14
15properties:
16  compatible:
17    items:
18      - enum:
19          - renesas,r8a7742-usb-dmac  # RZ/G1H
20          - renesas,r8a7743-usb-dmac  # RZ/G1M
21          - renesas,r8a7744-usb-dmac  # RZ/G1N
22          - renesas,r8a7745-usb-dmac  # RZ/G1E
23          - renesas,r8a77470-usb-dmac # RZ/G1C
24          - renesas,r8a774a1-usb-dmac # RZ/G2M
25          - renesas,r8a774b1-usb-dmac # RZ/G2N
26          - renesas,r8a774c0-usb-dmac # RZ/G2E
27          - renesas,r8a774e1-usb-dmac # RZ/G2H
28          - renesas,r8a7790-usb-dmac  # R-Car H2
29          - renesas,r8a7791-usb-dmac  # R-Car M2-W
30          - renesas,r8a7793-usb-dmac  # R-Car M2-N
31          - renesas,r8a7794-usb-dmac  # R-Car E2
32          - renesas,r8a7795-usb-dmac  # R-Car H3
33          - renesas,r8a7796-usb-dmac  # R-Car M3-W
34          - renesas,r8a77961-usb-dmac # R-Car M3-W+
35          - renesas,r8a77965-usb-dmac # R-Car M3-N
36          - renesas,r8a77990-usb-dmac # R-Car E3
37          - renesas,r8a77995-usb-dmac # R-Car D3
38      - const: renesas,usb-dmac
39
40  reg:
41    maxItems: 1
42
43  interrupts:
44    minItems: 2
45    maxItems: 2
46
47  interrupt-names:
48    items:
49      - pattern: ch0
50      - pattern: ch1
51
52  clocks:
53    maxItems: 1
54
55  '#dma-cells':
56    const: 1
57    description:
58      The cell specifies the channel number of the DMAC port connected to
59      the DMA client.
60
61  dma-channels:
62    const: 2
63
64  iommus:
65    minItems: 2
66    maxItems: 2
67
68  power-domains:
69    maxItems: 1
70
71  resets:
72    maxItems: 1
73
74required:
75  - compatible
76  - reg
77  - interrupts
78  - interrupt-names
79  - clocks
80  - '#dma-cells'
81  - dma-channels
82  - power-domains
83  - resets
84
85additionalProperties: false
86
87examples:
88  - |
89    #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
90    #include <dt-bindings/interrupt-controller/arm-gic.h>
91    #include <dt-bindings/power/r8a7790-sysc.h>
92
93    usb_dmac0: dma-controller@e65a0000 {
94        compatible = "renesas,r8a7790-usb-dmac", "renesas,usb-dmac";
95        reg = <0xe65a0000 0x100>;
96        interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
97                     <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
98        interrupt-names = "ch0", "ch1";
99        clocks = <&cpg CPG_MOD 330>;
100        power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
101        resets = <&cpg 330>;
102        #dma-cells = <1>;
103        dma-channels = <2>;
104    };
105