1 # SPDX-License-Identifier: GPL-2.0-only OR BSD
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/dma/apple,a
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Apple Audio DMA Controller (ADMAC)
8
9 description: |
10 Apple's Audio DMA Controller (ADMAC) is used
11 on SoCs from the "Apple Silicon" family.
12
13 The controller has been seen with up to 24 c
14 are TX-only, odd-numbered are RX-only. Indiv
15 fixed device endpoints.
16
17 maintainers:
18 - Martin PoviĊĦer <povik+lin@cutebit.org>
19
20 allOf:
21 - $ref: dma-controller.yaml#
22
23 properties:
24 compatible:
25 items:
26 - enum:
27 - apple,t6000-admac
28 - apple,t8103-admac
29 - apple,t8112-admac
30 - const: apple,admac
31
32 reg:
33 maxItems: 1
34
35 '#dma-cells':
36 const: 1
37 description:
38 Clients specify a single cell with chann
39
40 dma-channels:
41 maximum: 24
42
43 interrupts:
44 minItems: 4
45 maxItems: 4
46 description:
47 Interrupts that correspond to the 4 IRQ
48 only one of the controller outputs will
49 source. The remaining interrupts will be
50 in an interrupts-extended list the disco
51 an empty phandle reference <0>.
52
53 iommus:
54 minItems: 1
55 maxItems: 2
56
57 power-domains:
58 maxItems: 1
59
60 resets:
61 maxItems: 1
62
63 required:
64 - compatible
65 - reg
66 - '#dma-cells'
67 - dma-channels
68 - interrupts
69
70 additionalProperties: false
71
72 examples:
73 - |
74 #include <dt-bindings/interrupt-controller
75 #include <dt-bindings/interrupt-controller
76
77 aic: interrupt-controller {
78 interrupt-controller;
79 #interrupt-cells = <3>;
80 };
81
82 admac: dma-controller@238200000 {
83 compatible = "apple,t8103-admac", "apple
84 reg = <0x38200000 0x34000>;
85 dma-channels = <24>;
86 interrupts-extended = <0>,
87 <&aic AIC_IRQ 626
88 <0>,
89 <0>;
90 #dma-cells = <1>;
91 };
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