mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.3 KiB
54 lines
1.3 KiB
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
|
# Copyright 2019 BayLibre, SAS |
|
%YAML 1.2 |
|
--- |
|
$id: "http://devicetree.org/schemas/mailbox/amlogic,meson-gxbb-mhu.yaml#" |
|
$schema: "http://devicetree.org/meta-schemas/core.yaml#" |
|
|
|
title: Amlogic Meson Message-Handling-Unit Controller |
|
|
|
maintainers: |
|
- Neil Armstrong <[email protected]> |
|
|
|
description: | |
|
The Amlogic's Meson SoCs Message-Handling-Unit (MHU) is a mailbox controller |
|
that has 3 independent channels/links to communicate with remote processor(s). |
|
MHU links are hardwired on a platform. A link raises interrupt for any |
|
received data. However, there is no specified way of knowing if the sent |
|
data has been read by the remote. This driver assumes the sender polls |
|
STAT register and the remote clears it after having read the data. |
|
|
|
properties: |
|
compatible: |
|
enum: |
|
- amlogic,meson-gxbb-mhu |
|
|
|
reg: |
|
maxItems: 1 |
|
|
|
interrupts: |
|
minItems: 3 |
|
description: |
|
Contains the interrupt information corresponding to each of the 3 links |
|
of MHU. |
|
|
|
"#mbox-cells": |
|
const: 1 |
|
|
|
required: |
|
- compatible |
|
- reg |
|
- interrupts |
|
- "#mbox-cells" |
|
|
|
additionalProperties: false |
|
|
|
examples: |
|
- | |
|
mailbox@c883c404 { |
|
compatible = "amlogic,meson-gxbb-mhu"; |
|
reg = <0xc883c404 0x4c>; |
|
interrupts = <208>, <209>, <210>; |
|
#mbox-cells = <1>; |
|
}; |
|
|
|
|