xref: /linux/Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.yaml (revision bfdf35c5dc6267f70f76abddfacface4dd3b9ac0) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/dma/nvidia,tegra210-adma.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NVIDIA Tegra Audio DMA (ADMA) controller
8
9description: |
10  The Tegra Audio DMA controller is used for transferring data
11  between system memory and the Audio Processing Engine (APE).
12
13maintainers:
14  - Jon Hunter <jonathanh@nvidia.com>
15
16properties:
17  compatible:
18    oneOf:
19      - enum:
20          - nvidia,tegra210-adma
21          - nvidia,tegra186-adma
22          - nvidia,tegra264-adma
23      - items:
24          - enum:
25              - nvidia,tegra234-adma
26              - nvidia,tegra194-adma
27          - const: nvidia,tegra186-adma
28
29  reg:
30    description:
31      The 'page' region describes the address space of the page
32      used for accessing the DMA channel registers. The 'global'
33      region describes the address space of the global DMA registers.
34      In the absence of the 'reg-names' property, there must be a
35      single entry that covers the address space of the global DMA
36      registers and the DMA channel registers.
37    minItems: 1
38    maxItems: 2
39
40  reg-names:
41    minItems: 1
42    maxItems: 2
43
44  interrupts:
45    description: |
46      Should contain all of the per-channel DMA interrupts in
47      ascending order with respect to the DMA channel index.
48    minItems: 1
49    maxItems: 32
50
51  clocks:
52    description: Must contain one entry for the ADMA module clock
53    maxItems: 1
54
55  clock-names:
56    const: d_audio
57
58  "#dma-cells":
59    description: |
60      The first cell denotes the receive/transmit request number and
61      should be between 1 and the maximum number of requests supported.
62      This value corresponds to the RX/TX_REQUEST_SELECT fields in the
63      ADMA_CHn_CTRL register.
64    const: 1
65
66  dma-channel-mask:
67    maxItems: 1
68
69required:
70  - compatible
71  - reg
72  - interrupts
73  - clocks
74  - clock-names
75
76allOf:
77  - $ref: dma-controller.yaml#
78  - if:
79      properties:
80        compatible:
81          contains:
82            enum:
83              - nvidia,tegra210-adma
84    then:
85      properties:
86        reg:
87          items:
88            - description: Full address space range of DMA registers.
89
90  - if:
91      properties:
92        compatible:
93          contains:
94            enum:
95              - nvidia,tegra186-adma
96              - nvidia,tegra264-adma
97    then:
98      anyOf:
99        - properties:
100            reg:
101              items:
102                - description: Full address space range of DMA registers.
103        - properties:
104            reg:
105              items:
106                - description: Channel Page address space range of DMA registers.
107            reg-names:
108              items:
109                - const: page
110        - properties:
111            reg:
112              items:
113                - description: Channel Page address space range of DMA registers.
114                - description: Global Page address space range of DMA registers.
115            reg-names:
116              items:
117                - const: page
118                - const: global
119
120additionalProperties: false
121
122examples:
123  - |
124    #include <dt-bindings/interrupt-controller/arm-gic.h>
125    #include<dt-bindings/clock/tegra210-car.h>
126
127    dma-controller@702e2000 {
128        compatible = "nvidia,tegra210-adma";
129        reg = <0x702e2000 0x2000>;
130        interrupt-parent = <&tegra_agic>;
131        interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>,
132                     <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>,
133                     <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>,
134                     <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>,
135                     <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>,
136                     <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
137                     <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>,
138                     <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>,
139                     <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
140                     <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
141                     <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
142                     <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>,
143                     <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
144                     <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
145                     <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
146                     <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
147                     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
148                     <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>,
149                     <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>,
150                     <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>,
151                     <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
152                     <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
153        clocks = <&tegra_car TEGRA210_CLK_D_AUDIO>;
154        clock-names = "d_audio";
155        #dma-cells = <1>;
156    };
157
158...
159