1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 # Copyright (C) 2022 Texas Instruments Incorporated
3 %YAML 1.2
4 ---
5 $id: http://devicetree.org/schemas/misc/ti,j721e-esm.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
7
8 title: Texas Instruments K3 ESM
9
10 maintainers:
11 - Neha Malcom Francis <n-francis@ti.com>
12
13 description:
14 The ESM (Error Signaling Module) is an IP block on TI K3 devices
15 that allows handling of safety events somewhat similar to what interrupt
16 controller would do. The safety signals have their separate paths within
17 the SoC, and they are handled by the ESM, which routes them to the proper
18 destination, which can be system reset, interrupt controller, etc. In the
19 simplest configuration the signals are just routed to reset the SoC.
20
21 properties:
22 compatible:
23 const: ti,j721e-esm
24
25 reg:
26 maxItems: 1
27
28 ti,esm-pins:
29 $ref: /schemas/types.yaml#/definitions/uint32-array
30 description:
31 integer array of ESM interrupt pins to route to external event pin
32 which can be used to reset the SoC.
33 minItems: 1
34 maxItems: 255
35
36 required:
37 - compatible
38 - reg
39 - ti,esm-pins
40
41 additionalProperties: false
42
43 examples:
44 - |
45 bus {
46 #address-cells = <2>;
47 #size-cells = <2>;
48 esm@700000 {
49 compatible = "ti,j721e-esm";
50 reg = <0x0 0x700000 0x0 0x1000>;
51 ti,esm-pins = <344>, <345>;
52 };
53 };
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