xref: /linux/Documentation/devicetree/bindings/dma/cirrus,ep9301-dma-m2p.yaml (revision c7546e2c3cb739a3c1a2f5acaf9bb629d401afe5) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/dma/cirrus,ep9301-dma-m2p.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Cirrus Logic ep93xx SoC M2P DMA controller
8
9maintainers:
10  - Alexander Sverdlin <alexander.sverdlin@gmail.com>
11  - Nikita Shubin <nikita.shubin@maquefel.me>
12
13allOf:
14  - $ref: dma-controller.yaml#
15
16properties:
17  compatible:
18    oneOf:
19      - const: cirrus,ep9301-dma-m2p
20      - items:
21          - enum:
22              - cirrus,ep9302-dma-m2p
23              - cirrus,ep9307-dma-m2p
24              - cirrus,ep9312-dma-m2p
25              - cirrus,ep9315-dma-m2p
26          - const: cirrus,ep9301-dma-m2p
27
28  reg:
29    items:
30      - description: m2p0 channel registers
31      - description: m2p1 channel registers
32      - description: m2p2 channel registers
33      - description: m2p3 channel registers
34      - description: m2p4 channel registers
35      - description: m2p5 channel registers
36      - description: m2p6 channel registers
37      - description: m2p7 channel registers
38      - description: m2p8 channel registers
39      - description: m2p9 channel registers
40
41  clocks:
42    items:
43      - description: m2p0 channel gate clock
44      - description: m2p1 channel gate clock
45      - description: m2p2 channel gate clock
46      - description: m2p3 channel gate clock
47      - description: m2p4 channel gate clock
48      - description: m2p5 channel gate clock
49      - description: m2p6 channel gate clock
50      - description: m2p7 channel gate clock
51      - description: m2p8 channel gate clock
52      - description: m2p9 channel gate clock
53
54  clock-names:
55    items:
56      - const: m2p0
57      - const: m2p1
58      - const: m2p2
59      - const: m2p3
60      - const: m2p4
61      - const: m2p5
62      - const: m2p6
63      - const: m2p7
64      - const: m2p8
65      - const: m2p9
66
67  interrupts:
68    items:
69      - description: m2p0 channel interrupt
70      - description: m2p1 channel interrupt
71      - description: m2p2 channel interrupt
72      - description: m2p3 channel interrupt
73      - description: m2p4 channel interrupt
74      - description: m2p5 channel interrupt
75      - description: m2p6 channel interrupt
76      - description: m2p7 channel interrupt
77      - description: m2p8 channel interrupt
78      - description: m2p9 channel interrupt
79
80  '#dma-cells':
81    const: 2
82    description: |
83      The first cell is the unique device channel number as indicated by this
84      table for ep93xx:
85
86      0: I2S channel 1
87      1: I2S channel 2 (unused)
88      2: AC97 channel 1 (unused)
89      3: AC97 channel 2 (unused)
90      4: AC97 channel 3 (unused)
91      5: I2S channel 3 (unused)
92      6: UART1 (unused)
93      7: UART2 (unused)
94      8: UART3 (unused)
95      9: IRDA (unused)
96
97      The second cell is the DMA direction line number:
98
99      1: Memory to device
100      2: Device to memory
101
102required:
103  - compatible
104  - reg
105  - clocks
106  - clock-names
107  - interrupts
108
109additionalProperties: false
110
111examples:
112  - |
113    #include <dt-bindings/clock/cirrus,ep9301-syscon.h>
114    dma-controller@80000000 {
115        compatible = "cirrus,ep9301-dma-m2p";
116        reg = <0x80000000 0x0040>,
117              <0x80000040 0x0040>,
118              <0x80000080 0x0040>,
119              <0x800000c0 0x0040>,
120              <0x80000240 0x0040>,
121              <0x80000200 0x0040>,
122              <0x800002c0 0x0040>,
123              <0x80000280 0x0040>,
124              <0x80000340 0x0040>,
125              <0x80000300 0x0040>;
126        clocks = <&syscon EP93XX_CLK_M2P0>,
127                 <&syscon EP93XX_CLK_M2P1>,
128                 <&syscon EP93XX_CLK_M2P2>,
129                 <&syscon EP93XX_CLK_M2P3>,
130                 <&syscon EP93XX_CLK_M2P4>,
131                 <&syscon EP93XX_CLK_M2P5>,
132                 <&syscon EP93XX_CLK_M2P6>,
133                 <&syscon EP93XX_CLK_M2P7>,
134                 <&syscon EP93XX_CLK_M2P8>,
135                 <&syscon EP93XX_CLK_M2P9>;
136        clock-names = "m2p0", "m2p1",
137                      "m2p2", "m2p3",
138                      "m2p4", "m2p5",
139                      "m2p6", "m2p7",
140                      "m2p8", "m2p9";
141        interrupt-parent = <&vic0>;
142        interrupts = <7>, <8>, <9>, <10>, <11>, <12>, <13>, <14>, <15>, <16>;
143        #dma-cells = <2>;
144    };
145