142 lines
4.1 KiB
YAML
142 lines
4.1 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: "http://devicetree.org/schemas/remoteproc/st,stm32-rproc.yaml#"
|
|
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
|
|
|
|
title: STMicroelectronics STM32 remote processor controller bindings
|
|
|
|
description:
|
|
This document defines the binding for the remoteproc component that loads and
|
|
boots firmwares on the ST32MP family chipset.
|
|
|
|
maintainers:
|
|
- Fabien Dessenne <fabien.dessenne@st.com>
|
|
- Arnaud Pouliquen <arnaud.pouliquen@st.com>
|
|
|
|
properties:
|
|
compatible:
|
|
const: st,stm32mp1-m4
|
|
|
|
reg:
|
|
description:
|
|
Address ranges of the RETRAM and MCU SRAM memories used by the remote
|
|
processor.
|
|
maxItems: 3
|
|
|
|
resets:
|
|
maxItems: 1
|
|
|
|
st,syscfg-holdboot:
|
|
description: remote processor reset hold boot
|
|
- Phandle of syscon block.
|
|
- The offset of the hold boot setting register.
|
|
- The field mask of the hold boot.
|
|
$ref: "/schemas/types.yaml#/definitions/phandle-array"
|
|
maxItems: 1
|
|
|
|
st,syscfg-tz:
|
|
description:
|
|
Reference to the system configuration which holds the RCC trust zone mode
|
|
$ref: "/schemas/types.yaml#/definitions/phandle-array"
|
|
maxItems: 1
|
|
|
|
interrupts:
|
|
description: Should contain the WWDG1 watchdog reset interrupt
|
|
maxItems: 1
|
|
|
|
wakeup-source: true
|
|
|
|
mboxes:
|
|
description:
|
|
This property is required only if the rpmsg/virtio functionality is used.
|
|
items:
|
|
- description: |
|
|
A channel (a) used to communicate through virtqueues with the
|
|
remote proc.
|
|
Bi-directional channel:
|
|
- from local to remote = send message
|
|
- from remote to local = send message ack
|
|
- description: |
|
|
A channel (b) working the opposite direction of channel (a)
|
|
- description: |
|
|
A channel (c) used by the local proc to notify the remote proc that it
|
|
is about to be shut down.
|
|
Unidirectional channel:
|
|
- from local to remote, where ACK from the remote means that it is
|
|
ready for shutdown
|
|
- description: |
|
|
A channel (d) used by the local proc to notify the remote proc that it
|
|
has to stop interprocessor communnication.
|
|
Unidirectional channel:
|
|
- from local to remote, where ACK from the remote means that communnication
|
|
as been stopped on the remote side.
|
|
minItems: 1
|
|
|
|
mbox-names:
|
|
items:
|
|
- const: vq0
|
|
- const: vq1
|
|
- const: shutdown
|
|
- const: detach
|
|
minItems: 1
|
|
|
|
memory-region:
|
|
description:
|
|
List of phandles to the reserved memory regions associated with the
|
|
remoteproc device. This is variable and describes the memories shared with
|
|
the remote processor (e.g. remoteproc firmware and carveouts, rpmsg
|
|
vrings, ...).
|
|
(see ../reserved-memory/reserved-memory.txt)
|
|
|
|
st,syscfg-pdds:
|
|
$ref: "/schemas/types.yaml#/definitions/phandle-array"
|
|
description: |
|
|
Reference to the system configuration which holds the remote
|
|
maxItems: 1
|
|
|
|
st,syscfg-m4-state:
|
|
$ref: "/schemas/types.yaml#/definitions/phandle-array"
|
|
description: |
|
|
Reference to the tamp register which exposes the Cortex-M4 state.
|
|
maxItems: 1
|
|
|
|
st,syscfg-rsc-tbl:
|
|
$ref: "/schemas/types.yaml#/definitions/phandle-array"
|
|
description: |
|
|
Reference to the tamp register which references the Cortex-M4
|
|
resource table address.
|
|
maxItems: 1
|
|
|
|
st,auto-boot:
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
|
description:
|
|
If defined, when remoteproc is probed, it loads the default firmware and
|
|
starts the remote processor.
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- resets
|
|
- st,syscfg-holdboot
|
|
- st,syscfg-tz
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
#include <dt-bindings/reset/stm32mp1-resets.h>
|
|
m4_rproc: m4@10000000 {
|
|
compatible = "st,stm32mp1-m4";
|
|
reg = <0x10000000 0x40000>,
|
|
<0x30000000 0x40000>,
|
|
<0x38000000 0x10000>;
|
|
resets = <&rcc MCU_R>;
|
|
st,syscfg-holdboot = <&rcc 0x10C 0x1>;
|
|
st,syscfg-tz = <&rcc 0x000 0x1>;
|
|
st,syscfg-rsc-tbl = <&tamp 0x144 0xFFFFFFFF>;
|
|
st,syscfg-m4-state = <&tamp 0x148 0xFFFFFFFF>;
|
|
};
|
|
|
|
...
|