1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/remoteproc/amlogic,meson-mx-ao-arc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Amlogic Meson AO ARC Remote Processor
8
9 description:
10 Amlogic Meson6, Meson8, Meson8b and Meson8m2 SoCs embed an ARC core
11 controller for always-on operations, typically used for managing
12 system suspend. Meson6 and older use a ARC core based on the ARCv1
13 ISA, while Meson8, Meson8b and Meson8m2 use an ARC EM4 (ARCv2 ISA)
14 core.
15
16 maintainers:
17 - Martin Blumenstingl <martin.blumenstingl@googlemail.com>
18
19 properties:
20 compatible:
21 items:
22 - enum:
23 - amlogic,meson8-ao-arc
24 - amlogic,meson8b-ao-arc
25 - const: amlogic,meson-mx-ao-arc
26
27 firmware-name:
28 $ref: /schemas/types.yaml#/definitions/string
29 description:
30 The name of the firmware which should be loaded for this remote
31 processor.
32
33 reg:
34 description:
35 Address ranges of the remap and CPU control addresses for the
36 remote processor.
37 minItems: 2
38
39 reg-names:
40 items:
41 - const: remap
42 - const: cpu
43
44 resets:
45 minItems: 1
46
47 clocks:
48 minItems: 1
49
50 sram:
51 $ref: /schemas/types.yaml#/definitions/phandle
52 description:
53 phandles to a reserved SRAM region which is used as the memory of
54 the ARC core. The region should be defined as child nodes of the
55 AHB SRAM node as per the generic bindings in
56 Documentation/devicetree/bindings/sram/sram.yaml
57
58 amlogic,secbus2:
59 $ref: /schemas/types.yaml#/definitions/phandle
60 description:
61 A phandle to the SECBUS2 region which contains some configuration
62 bits of this remote processor
63
64 required:
65 - compatible
66 - reg
67 - reg-names
68 - resets
69 - clocks
70 - sram
71 - amlogic,secbus2
72
73 additionalProperties: false
74
75 examples:
76 - |
77 remoteproc@1c {
78 compatible = "amlogic,meson8-ao-arc", "amlogic,meson-mx-ao-arc";
79 reg = <0x1c 0x8>, <0x38 0x8>;
80 reg-names = "remap", "cpu";
81 resets = <&media_cpu_reset>;
82 clocks = <&media_cpu_clock>;
83 sram = <&ahb_sram_ao_arc>;
84 amlogic,secbus2 = <&secbus2>;
85 };
86
87 ...
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