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 verfification 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