1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/dma/fsl,imx-sdma.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Freescale Smart Direct Memory Access (SDMA) Controller for i.MX
8
9 maintainers:
10 - Joy Zou <joy.zou@nxp.com>
11
12 allOf:
13 - $ref: dma-controller.yaml#
14
15 properties:
16 compatible:
17 oneOf:
18 - items:
19 - enum:
20 - fsl,imx50-sdma
21 - fsl,imx51-sdma
22 - fsl,imx53-sdma
23 - fsl,imx6q-sdma
24 - fsl,imx7d-sdma
25 - const: fsl,imx35-sdma
26 - items:
27 - enum:
28 - fsl,imx6sx-sdma
29 - fsl,imx6sl-sdma
30 - const: fsl,imx6q-sdma
31 - items:
32 - const: fsl,imx6ul-sdma
33 - const: fsl,imx6q-sdma
34 - const: fsl,imx35-sdma
35 - items:
36 - const: fsl,imx6sll-sdma
37 - const: fsl,imx6ul-sdma
38 - items:
39 - const: fsl,imx8mq-sdma
40 - const: fsl,imx7d-sdma
41 - items:
42 - enum:
43 - fsl,imx8mp-sdma
44 - fsl,imx8mn-sdma
45 - fsl,imx8mm-sdma
46 - const: fsl,imx8mq-sdma
47 - items:
48 - enum:
49 - fsl,imx25-sdma
50 - fsl,imx31-sdma
51 - fsl,imx35-sdma
52 reg:
53 maxItems: 1
54
55 interrupts:
56 maxItems: 1
57
58 fsl,sdma-ram-script-name:
59 $ref: /schemas/types.yaml#/definitions/string
60 description: Should contain the full path of SDMA RAM scripts firmware.
61
62 "#dma-cells":
63 const: 3
64 description: |
65 The first cell: request/event ID
66
67 The second cell: peripheral types ID
68 enum:
69 - MCU domain SSI: 0
70 - Shared SSI: 1
71 - MMC: 2
72 - SDHC: 3
73 - MCU domain UART: 4
74 - Shared UART: 5
75 - FIRI: 6
76 - MCU domain CSPI: 7
77 - Shared CSPI: 8
78 - SIM: 9
79 - ATA: 10
80 - CCM: 11
81 - External peripheral: 12
82 - Memory Stick Host Controller: 13
83 - Shared Memory Stick Host Controller: 14
84 - DSP: 15
85 - Memory: 16
86 - FIFO type Memory: 17
87 - SPDIF: 18
88 - IPU Memory: 19
89 - ASRC: 20
90 - ESAI: 21
91 - SSI Dual FIFO: 22
92 description: needs firmware more than ver 2
93 - Shared ASRC: 23
94 - SAI: 24
95 - Multi SAI: 25
96 - HDMI Audio: 26
97 - I2C: 27
98
99 The third cell: transfer priority ID
100 enum:
101 - High: 0
102 - Medium: 1
103 - Low: 2
104
105 gpr:
106 $ref: /schemas/types.yaml#/definitions/phandle
107 description: The phandle to the General Purpose Register (GPR) node
108
109 fsl,sdma-event-remap:
110 $ref: /schemas/types.yaml#/definitions/uint32-matrix
111 maxItems: 2
112 items:
113 items:
114 - description: GPR register offset
115 - description: GPR register shift
116 - description: GPR register value
117 description: |
118 Register bits of sdma event remap, the format is <reg shift val>.
119 The order is <RX>, <TX>.
120
121 clocks:
122 maxItems: 2
123
124 clock-names:
125 items:
126 - const: ipg
127 - const: ahb
128
129 iram:
130 $ref: /schemas/types.yaml#/definitions/phandle
131 description: The phandle to the On-chip RAM (OCRAM) node.
132
133 required:
134 - compatible
135 - reg
136 - interrupts
137 - fsl,sdma-ram-script-name
138
139 additionalProperties: false
140
141 examples:
142 - |
143 sdma: dma-controller@83fb0000 {
144 compatible = "fsl,imx51-sdma", "fsl,imx35-sdma";
145 reg = <0x83fb0000 0x4000>;
146 interrupts = <6>;
147 #dma-cells = <3>;
148 fsl,sdma-ram-script-name = "sdma-imx51.bin";
149 };
150
151 ...
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