1*444f312aSNeha Malcom Francis# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2*444f312aSNeha Malcom Francis# Copyright (C) 2022 Texas Instruments Incorporated 3*444f312aSNeha Malcom Francis%YAML 1.2 4*444f312aSNeha Malcom Francis--- 5*444f312aSNeha Malcom Francis$id: http://devicetree.org/schemas/misc/ti,j721e-esm.yaml# 6*444f312aSNeha Malcom Francis$schema: http://devicetree.org/meta-schemas/core.yaml# 7*444f312aSNeha Malcom Francis 8*444f312aSNeha Malcom Francistitle: Texas Instruments K3 ESM 9*444f312aSNeha Malcom Francis 10*444f312aSNeha Malcom Francismaintainers: 11*444f312aSNeha Malcom Francis - Neha Malcom Francis <n-francis@ti.com> 12*444f312aSNeha Malcom Francis 13*444f312aSNeha Malcom Francisdescription: 14*444f312aSNeha Malcom Francis The ESM (Error Signaling Module) is an IP block on TI K3 devices 15*444f312aSNeha Malcom Francis that allows handling of safety events somewhat similar to what interrupt 16*444f312aSNeha Malcom Francis controller would do. The safety signals have their separate paths within 17*444f312aSNeha Malcom Francis the SoC, and they are handled by the ESM, which routes them to the proper 18*444f312aSNeha Malcom Francis destination, which can be system reset, interrupt controller, etc. In the 19*444f312aSNeha Malcom Francis simplest configuration the signals are just routed to reset the SoC. 20*444f312aSNeha Malcom Francis 21*444f312aSNeha Malcom Francisproperties: 22*444f312aSNeha Malcom Francis compatible: 23*444f312aSNeha Malcom Francis const: ti,j721e-esm 24*444f312aSNeha Malcom Francis 25*444f312aSNeha Malcom Francis reg: 26*444f312aSNeha Malcom Francis maxItems: 1 27*444f312aSNeha Malcom Francis 28*444f312aSNeha Malcom Francis ti,esm-pins: 29*444f312aSNeha Malcom Francis $ref: /schemas/types.yaml#/definitions/uint32-array 30*444f312aSNeha Malcom Francis description: 31*444f312aSNeha Malcom Francis integer array of ESM interrupt pins to route to external event pin 32*444f312aSNeha Malcom Francis which can be used to reset the SoC. 33*444f312aSNeha Malcom Francis minItems: 1 34*444f312aSNeha Malcom Francis maxItems: 255 35*444f312aSNeha Malcom Francis 36*444f312aSNeha Malcom Francisrequired: 37*444f312aSNeha Malcom Francis - compatible 38*444f312aSNeha Malcom Francis - reg 39*444f312aSNeha Malcom Francis - ti,esm-pins 40*444f312aSNeha Malcom Francis 41*444f312aSNeha Malcom FrancisadditionalProperties: false 42*444f312aSNeha Malcom Francis 43*444f312aSNeha Malcom Francisexamples: 44*444f312aSNeha Malcom Francis - | 45*444f312aSNeha Malcom Francis bus { 46*444f312aSNeha Malcom Francis #address-cells = <2>; 47*444f312aSNeha Malcom Francis #size-cells = <2>; 48*444f312aSNeha Malcom Francis esm@700000 { 49*444f312aSNeha Malcom Francis compatible = "ti,j721e-esm"; 50*444f312aSNeha Malcom Francis reg = <0x0 0x700000 0x0 0x1000>; 51*444f312aSNeha Malcom Francis ti,esm-pins = <344>, <345>; 52*444f312aSNeha Malcom Francis }; 53*444f312aSNeha Malcom Francis }; 54