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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/freescale/fsl,s400-api.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP S400 Baseline API module
maintainers:
- Alice Guo <alice.guo@nxp.com>
description: |
In the Sentinel application, the security subsystem uses S4 MU-AP to
communicate and coordinate with the SoC host processor. The s400-api firmware
driver provides the services to transmit data to and receive data from the
S4 MU-AP.
properties:
compatible:
items:
- const: fsl,imx8ulp-s400
mboxes:
description: |
Use the mailbox provided by S4 MU-AP device to communicate with the S400.
It should contain 2 mailboxes, one for transmitting messages and another
for receiving.
maxItems: 1
mbox-names:
items:
- const: tx
- const: rx
required:
- compatible
- mboxes
- mbox-names
additionalProperties: false
examples:
- |
s400-api {
compatible = "fsl,imx8ulp-s400";
mboxes = <&s4muap 0 0 &s4muap 1 0>;
mbox-names = "tx", "rx";
};
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