Document the binding for TI K3 ESM (Error Signaling Module) block. Signed-off-by: Neha Malcom Francis <n-francis@xxxxxx> --- .../devicetree/bindings/misc/esm-k3.yaml | 54 +++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/misc/esm-k3.yaml diff --git a/Documentation/devicetree/bindings/misc/esm-k3.yaml b/Documentation/devicetree/bindings/misc/esm-k3.yaml new file mode 100644 index 000000000000..5e637add3b0e --- /dev/null +++ b/Documentation/devicetree/bindings/misc/esm-k3.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2022 Texas Instruments Incorporated +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/misc/esm-k3.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Texas Instruments K3 ESM Binding + +maintainers: + - Neha Malcom Francis <n-francis@xxxxxx> + +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 handld 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: + items: + - description: physical address and length of the registers which + contain revision and debug features + - description: physical address and length of the registers which + indicate strapping options + + ti,esm-pins: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: | + integer array of ESM event IDs to route to external event pin which can + be used to reset the SoC. The array can have an arbitrary amount of event + IDs listed on it. + minItems: 1 + maxItems: 255 + +additionalProperties: false + +required: + - compatible + - reg + - ti,esm-pins + +examples: + - | + main_esm: esm@700000 { + compatible = "ti,j721e-esm"; + reg = <0x0 0x700000 0x0 0x1000>; + ti,esm-pins = <344>, <345>; + }; -- 2.34.1
