# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: "http://devicetree.org/schemas/remoteproc/fsl,imx-rproc.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: NXP i.MX Co-Processor Bindings
description:
This binding provides support for ARM Cortex M4 Co-processor found on some NXP iMX SoCs.
maintainers:
- Peng Fan <peng.fan@nxp.com>
properties:
compatible:
enum:
- fsl,imx6sx-cm4
- fsl,imx7d-cm4
- fsl,imx7ulp-cm4
- fsl,imx8mm-cm4
- fsl,imx8mn-cm7
- fsl,imx8mp-cm7
- fsl,imx8mq-cm4
- fsl,imx8ulp-cm33
- fsl,imx93-cm33
clocks:
maxItems: 1
syscon:
$ref: /schemas/types.yaml#/definitions/phandle
description:
Phandle to syscon block which provide access to System Reset Controller
mbox-names:
items:
- const: tx
- const: rx
- const: rxdb
mboxes:
description:
This property is required only if the rpmsg/virtio functionality is used.
List of <&phandle type channel> - 1 channel for TX, 1 channel for RX, 1 channel for RXDB.
(see mailbox/fsl,mu.yaml)
minItems: 1
maxItems: 3
memory-region:
description:
If present, a phandle for a reserved memory area that used for vdev buffer,
resource table, vring region and others used by remote processor.
minItems: 1
maxItems: 32
fsl,auto-boot:
$ref: /schemas/types.yaml#/definitions/flag
description:
Indicate whether need to load the default firmware and start the remote
processor automatically.
required:
- compatible
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/imx7d-clock.h>
m4_reserved_sysmem1: cm4@80000000 {
reg = <0x80000000 0x80000>;
};
m4_reserved_sysmem2: cm4@81000000 {
reg = <0x81000000 0x80000>;
};
imx7d-cm4 {
compatible = "fsl,imx7d-cm4";
memory-region = <&m4_reserved_sysmem1>, <&m4_reserved_sysmem2>;
syscon = <&src>;
clocks = <&clks IMX7D_ARM_M4_ROOT_CLK>;
};
- |
#include <dt-bindings/clock/imx8mm-clock.h>
imx8mm-cm4 {
compatible = "fsl,imx8mm-cm4";
clocks = <&clk IMX8MM_CLK_M4_DIV>;
mbox-names = "tx", "rx", "rxdb";
mboxes = <&mu 0 1
&mu 1 1
&mu 3 1>;
memory-region = <&vdev0buffer>, <&vdev0vring0>, <&vdev0vring1>, <&rsc_table>;
syscon = <&src>;
};
...
