tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/firmware/thead,th1520-aon.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: T-HEAD TH1520 AON (Always-On) Firmware
8
9description: |
10 The Always-On (AON) subsystem in the TH1520 SoC is responsible for managing
11 low-power states, system wakeup events, and power management tasks. It is
12 designed to operate independently in a dedicated power domain, allowing it to
13 remain functional even during the SoC's deep sleep states.
14
15 At the heart of the AON subsystem is the E902, a low-power core that executes
16 firmware responsible for coordinating tasks such as power domain control,
17 clock management, and system wakeup signaling. Communication between the main
18 SoC and the AON subsystem is handled through a mailbox interface, which
19 enables message-based interactions with the AON firmware.
20
21maintainers:
22 - Michal Wilczynski <m.wilczynski@samsung.com>
23
24properties:
25 compatible:
26 const: thead,th1520-aon
27
28 mboxes:
29 maxItems: 1
30
31 mbox-names:
32 items:
33 - const: aon
34
35 "#power-domain-cells":
36 const: 1
37
38required:
39 - compatible
40 - mboxes
41 - mbox-names
42 - "#power-domain-cells"
43
44additionalProperties: false
45
46examples:
47 - |
48 aon: aon {
49 compatible = "thead,th1520-aon";
50 mboxes = <&mbox_910t 1>;
51 mbox-names = "aon";
52 #power-domain-cells = <1>;
53 };