1 # SPDX-License-Identifier: (GPL-2.0-only OR BS
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/dma/cirrus,
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Cirrus Logic ep93xx SoC M2P DMA control
8
9 maintainers:
10 - Alexander Sverdlin <alexander.sverdlin@gmai
11 - Nikita Shubin <nikita.shubin@maquefel.me>
12
13 allOf:
14 - $ref: dma-controller.yaml#
15
16 properties:
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 chan
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 lin
98
99 1: Memory to device
100 2: Device to memory
101
102 required:
103 - compatible
104 - reg
105 - clocks
106 - clock-names
107 - interrupts
108
109 additionalProperties: false
110
111 examples:
112 - |
113 #include <dt-bindings/clock/cirrus,ep9301-
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>
143 #dma-cells = <2>;
144 };
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