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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/power/reset/toradex,smarc-ec.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Toradex Embedded Controller
maintainers:
- Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
- Francesco Dolcini <francesco.dolcini@toradex.com>
description: |
The Toradex Embedded Controller (EC) is used on Toradex SMARC modules,
primarily to manage power and reset functionalities.
The EC provides the following functions:
- Reads the SMARC POWER_BTN# and RESET_IN# signals and controls the PMIC accordingly.
- Controls the SoC boot mode signals based on the SMARC BOOT_SEL# and FORCE_RECOV# inputs.
- Manages the CARRIER_STDBY# signal in response to relevant SoC signals.
The EC runs a small firmware, factory programmed into its internal flash, and communicates over I2C.
It allows software to control power-off and reset functionalities of the module.
properties:
compatible:
items:
- enum:
- toradex,smarc-imx95-ec
- toradex,smarc-imx8mp-ec
- const: toradex,smarc-ec
reg:
maxItems: 1
required:
- compatible
- reg
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
reset-controller@28 {
compatible = "toradex,smarc-imx95-ec", "toradex,smarc-ec";
reg = <0x28>;
};
};
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