xref: /linux/Documentation/devicetree/bindings/remoteproc/amlogic,meson-mx-ao-arc.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
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
7title: Amlogic Meson AO ARC Remote Processor
8
9description:
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
16maintainers:
17  - Martin Blumenstingl <martin.blumenstingl@googlemail.com>
18
19properties:
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
64required:
65  - compatible
66  - reg
67  - reg-names
68  - resets
69  - clocks
70  - sram
71  - amlogic,secbus2
72
73additionalProperties: false
74
75examples:
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...
88