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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/freescale/fsl,seco_mu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP i.MX8 SECO MU driver
maintainers:
- Aisheng Dong <aisheng.dong@nxp.com>
description: |
Create char devices in /dev as channels of the form /dev/seco_muXchY with X
the id of the driver and Y for each users. It allows to send and receive
messages to the SECO.
properties:
compatible:
enum:
- fsl,imx-seco-mu
mboxes:
description:
List of <&phandle type channel> - 4 channels for TX, 4 channels for RX,
1 channel for TXDB (see mailbox/fsl,mu.txt)
maxItems: 9
mbox-names:
items:
- const: txdb
- const: rxdb
fsl,seco_mu_id:
description:
Identify the driver instance, used to create the channels, default to 1
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [0,1,2,3]
fsl,seco_max_users:
description:
Number of channels to create, default to 4
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [0,1,2,3,4,5,6,7,8,9]
fsl,cmd_tag:
description:
Tag in message header for commands on this MU, default to 0x17
allOf:
- $ref: /schemas/types.yaml#/definitions/uint8
- enum: [0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e]
fsl,rsp_tag:
description:
Tag in message header for responses on this MU, default to 0xe1
allOf:
- $ref: /schemas/types.yaml#/definitions/uint8
- enum: [0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8]
required:
- compatible
- mboxes
- mbox-names
examples:
- |
seco_mu: seco_mu {
compatible = "fsl,imx-seco-mu";
mbox-names = "txdb", "rxdb";
mboxes = <&mu 2 0
&mu 3 0>;
fsl,seco_mu_id = <1>;
fsl,seco_max_users = <4>;
fsl,cmd_tag = /bits/ 8 <0x17>;
fsl,rsp_tag = /bits/ 8 <0xe1>;
};
|
