summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/dma/fsl,imx-sdma.yaml
blob: b95dd8db5a30a06a89745a4016eaf79448e2316b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/fsl,imx-sdma.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Freescale Smart Direct Memory Access (SDMA) Controller for i.MX

maintainers:
  - Joy Zou <joy.zou@nxp.com>

allOf:
  - $ref: dma-controller.yaml#

properties:
  compatible:
    oneOf:
      - items:
          - enum:
              - fsl,imx50-sdma
              - fsl,imx51-sdma
              - fsl,imx53-sdma
              - fsl,imx6q-sdma
              - fsl,imx7d-sdma
          - const: fsl,imx35-sdma
      - items:
          - enum:
              - fsl,imx6sx-sdma
              - fsl,imx6sl-sdma
          - const: fsl,imx6q-sdma
      - items:
          - const: fsl,imx6ul-sdma
          - const: fsl,imx6q-sdma
          - const: fsl,imx35-sdma
      - items:
          - const: fsl,imx6sll-sdma
          - const: fsl,imx6ul-sdma
      - items:
          - const: fsl,imx8mq-sdma
          - const: fsl,imx7d-sdma
      - items:
          - enum:
              - fsl,imx8mp-sdma
              - fsl,imx8mn-sdma
              - fsl,imx8mm-sdma
          - const: fsl,imx8mq-sdma
      - items:
          - enum:
              - fsl,imx25-sdma
              - fsl,imx31-sdma
              - fsl,imx35-sdma
  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  fsl,sdma-ram-script-name:
    $ref: /schemas/types.yaml#/definitions/string
    description: Should contain the full path of SDMA RAM scripts firmware.

  "#dma-cells":
    const: 3
    description: |
      The first cell: request/event ID

      The second cell: peripheral types ID
        enum:
          - MCU domain SSI: 0
          - Shared SSI: 1
          - MMC: 2
          - SDHC: 3
          - MCU domain UART: 4
          - Shared UART: 5
          - FIRI: 6
          - MCU domain CSPI: 7
          - Shared CSPI: 8
          - SIM: 9
          - ATA: 10
          - CCM: 11
          - External peripheral: 12
          - Memory Stick Host Controller: 13
          - Shared Memory Stick Host Controller: 14
          - DSP: 15
          - Memory: 16
          - FIFO type Memory: 17
          - SPDIF: 18
          - IPU Memory: 19
          - ASRC: 20
          - ESAI: 21
          - SSI Dual FIFO: 22
              description: needs firmware more than ver 2
          - Shared ASRC: 23
          - SAI: 24
          - HDMI Audio: 25

       The third cell: transfer priority ID
         enum:
           - High: 0
           - Medium: 1
           - Low: 2

  gpr:
    $ref: /schemas/types.yaml#/definitions/phandle
    description: The phandle to the General Purpose Register (GPR) node

  fsl,sdma-event-remap:
    $ref: /schemas/types.yaml#/definitions/uint32-matrix
    maxItems: 2
    items:
      items:
        - description: GPR register offset
        - description: GPR register shift
        - description: GPR register value
    description: |
      Register bits of sdma event remap, the format is <reg shift val>.
      The order is <RX>, <TX>.

  clocks:
    maxItems: 2

  clock-names:
    items:
      - const: ipg
      - const: ahb

  iram:
    $ref: /schemas/types.yaml#/definitions/phandle
    description: The phandle to the On-chip RAM (OCRAM) node.

required:
  - compatible
  - reg
  - interrupts
  - fsl,sdma-ram-script-name

additionalProperties: false

examples:
  - |
    sdma: dma-controller@83fb0000 {
      compatible = "fsl,imx51-sdma", "fsl,imx35-sdma";
      reg = <0x83fb0000 0x4000>;
      interrupts = <6>;
      #dma-cells = <3>;
      fsl,sdma-ram-script-name = "sdma-imx51.bin";
    };

...