xref: /freebsd/sys/contrib/device-tree/Bindings/power/reset/apple,smc-reboot.yaml (revision 833e5d42ab135b0238e61c5b3c19b8619677cbfa)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/power/reset/apple,smc-reboot.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Apple SMC Reboot Controller

description:
  The Apple System Management Controller (SMC) provides reboot functionality
  on Apple Silicon SoCs. It uses NVMEM cells to store and track various
  system state information related to boot, shutdown, and panic events.

maintainers:
  - Sven Peter <sven@kernel.org>

properties:
  compatible:
    const: apple,smc-reboot

  nvmem-cells:
    items:
      - description: Flag indicating shutdown (as opposed to reboot)
      - description: Stage at which the boot process stopped (0x30 for normal boot)
      - description: Counter for boot errors
      - description: Counter for system panics

  nvmem-cell-names:
    items:
      - const: shutdown_flag
      - const: boot_stage
      - const: boot_error_count
      - const: panic_count

required:
  - compatible
  - nvmem-cells
  - nvmem-cell-names

additionalProperties: false