xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/misc/ti,j721e-esm.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
# Copyright (C) 2022 Texas Instruments Incorporated
%YAML 1.2
---
$id: http://devicetree.org/schemas/misc/ti,j721e-esm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Texas Instruments K3 ESM

maintainers:
  - Neha Malcom Francis <n-francis@ti.com>

description:
  The ESM (Error Signaling Module) is an IP block on TI K3 devices
  that allows handling of safety events somewhat similar to what interrupt
  controller would do. The safety signals have their separate paths within
  the SoC, and they are handled by the ESM, which routes them to the proper
  destination, which can be system reset, interrupt controller, etc. In the
  simplest configuration the signals are just routed to reset the SoC.

properties:
  compatible:
    const: ti,j721e-esm

  reg:
    maxItems: 1

  ti,esm-pins:
    $ref: /schemas/types.yaml#/definitions/uint32-array
    description:
      integer array of ESM interrupt pins to route to external event pin
      which can be used to reset the SoC.
    minItems: 1
    maxItems: 255

required:
  - compatible
  - reg
  - ti,esm-pins

additionalProperties: false

examples:
  - |
    bus {
        #address-cells = <2>;
        #size-cells = <2>;
        esm@700000 {
            compatible = "ti,j721e-esm";
            reg = <0x0 0x700000 0x0 0x1000>;
            ti,esm-pins = <344>, <345>;
        };
    };