1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/soc/microchip/microchip,mpfs-sys-controller.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Microchip PolarFire SoC (MPFS) MSS (microprocessor subsystem) system controller
8
9maintainers:
10  - Conor Dooley <conor.dooley@microchip.com>
11
12description: |
13  PolarFire SoC devices include a microcontroller acting as the system controller,
14  which provides "services" to the main processor and to the FPGA fabric. These
15  services include hardware rng, reprogramming of the FPGA and verification of the
16  eNVM contents etc. More information on these services can be found online, at
17  https://onlinedocs.microchip.com/pr/GUID-1409CF11-8EF9-4C24-A94E-70979A688632-en-US-1/index.html
18
19  Communication with the system controller is done via a mailbox, of which the client
20  portion is documented here.
21
22properties:
23  mboxes:
24    maxItems: 1
25
26  compatible:
27    const: microchip,mpfs-sys-controller
28
29required:
30  - compatible
31  - mboxes
32
33additionalProperties: false
34
35examples:
36  - |
37    syscontroller {
38      compatible = "microchip,mpfs-sys-controller";
39      mboxes = <&mbox 0>;
40    };
41