1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/arm/amlogic/amlogic,meson-mx-secbus2.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Amlogic Meson8/Meson8b/Meson8m2 SECBUS2 register interface
8
9 maintainers:
10 - Martin Blumenstingl <martin.blumenstingl@googlemail.com>
11
12 description: |
13 The Meson8/Meson8b/Meson8m2 SoCs have a register bank called SECBUS2 which
14 contains registers for various IP blocks such as pin-controller bits for
15 the BSD_EN and TEST_N GPIOs as well as some AO ARC core control bits.
16 The registers can be accessed directly when not running in "secure mode".
17 When "secure mode" is enabled then these registers have to be accessed
18 through secure monitor calls.
19
20 properties:
21 compatible:
22 items:
23 - enum:
24 - amlogic,meson8-secbus2
25 - amlogic,meson8b-secbus2
26 - const: syscon
27
28 reg:
29 maxItems: 1
30
31 required:
32 - compatible
33 - reg
34
35 additionalProperties: false
36
37 examples:
38 - |
39 secbus2: system-controller@4000 {
40 compatible = "amlogic,meson8-secbus2", "syscon";
41 reg = <0x4000 0x2000>;
42 };
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