xref: /linux/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml (revision 4359a011e259a4608afc7fb3635370c9d4ba5943) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/dma/nvidia,tegra186-gpc-dma.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NVIDIA Tegra GPC DMA Controller Device Tree Bindings
8
9description: |
10  The Tegra General Purpose Central (GPC) DMA controller is used for faster
11  data transfers between memory to memory, memory to device and device to
12  memory.
13
14maintainers:
15  - Jon Hunter <jonathanh@nvidia.com>
16  - Rajesh Gumasta <rgumasta@nvidia.com>
17
18allOf:
19  - $ref: "dma-controller.yaml#"
20
21properties:
22  compatible:
23    oneOf:
24      - const: nvidia,tegra186-gpcdma
25      - items:
26          - enum:
27              - nvidia,tegra234-gpcdma
28              - nvidia,tegra194-gpcdma
29          - const: nvidia,tegra186-gpcdma
30
31  "#dma-cells":
32    const: 1
33
34  reg:
35    maxItems: 1
36
37  interrupts:
38    description:
39      Should contain all of the per-channel DMA interrupts in
40      ascending order with respect to the DMA channel index.
41    minItems: 1
42    maxItems: 31
43
44  resets:
45    maxItems: 1
46
47  reset-names:
48    const: gpcdma
49
50  iommus:
51    maxItems: 1
52
53  dma-coherent: true
54
55required:
56  - compatible
57  - reg
58  - interrupts
59  - resets
60  - reset-names
61  - "#dma-cells"
62  - iommus
63
64additionalProperties: false
65
66examples:
67  - |
68    #include <dt-bindings/interrupt-controller/arm-gic.h>
69    #include <dt-bindings/memory/tegra186-mc.h>
70    #include <dt-bindings/reset/tegra186-reset.h>
71
72    dma-controller@2600000 {
73        compatible = "nvidia,tegra186-gpcdma";
74        reg = <0x2600000 0x210000>;
75        resets = <&bpmp TEGRA186_RESET_GPCDMA>;
76        reset-names = "gpcdma";
77        interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
78                     <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>,
79                     <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>,
80                     <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>,
81                     <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>,
82                     <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>,
83                     <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>,
84                     <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>,
85                     <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>,
86                     <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>,
87                     <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>,
88                     <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>,
89                     <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>,
90                     <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>,
91                     <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>,
92                     <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>,
93                     <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>,
94                     <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
95                     <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
96                     <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
97                     <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,
98                     <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>,
99                     <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
100                     <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>,
101                     <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
102                     <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>,
103                     <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>,
104                     <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>,
105                     <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>,
106                     <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>,
107                     <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
108        #dma-cells = <1>;
109        iommus = <&smmu TEGRA186_SID_GPCDMA_0>;
110        dma-coherent;
111    };
112...
113