141 lines
3.9 KiB
YAML
141 lines
3.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: "http://devicetree.org/schemas/mailbox/xlnx,zynqmp-ipi-mailbox.yaml#"
|
|
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
|
|
|
|
title: Xilinx IPI(Inter Processor Interrupt) mailbox controller
|
|
|
|
description: |
|
|
The Xilinx IPI(Inter Processor Interrupt) mailbox controller is to manage
|
|
messaging between two Xilinx Zynq UltraScale+ MPSoC IPI agents. Each IPI
|
|
agent owns registers used for notification and buffers for message.
|
|
|
|
+-------------------------------------+
|
|
| Xilinx ZynqMP IPI Controller |
|
|
+-------------------------------------+
|
|
+--------------------------------------------------+
|
|
TF-A | |
|
|
| |
|
|
| |
|
|
+--------------------------+ |
|
|
| |
|
|
| |
|
|
+--------------------------------------------------+
|
|
+------------------------------------------+
|
|
| +----------------+ +----------------+ |
|
|
Hardware | | IPI Agent | | IPI Buffers | |
|
|
| | Registers | | | |
|
|
| | | | | |
|
|
| +----------------+ +----------------+ |
|
|
| |
|
|
| Xilinx IPI Agent Block |
|
|
+------------------------------------------+
|
|
|
|
maintainers:
|
|
- Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
|
|
|
|
properties:
|
|
compatible:
|
|
const: xlnx,zynqmp-ipi-mailbox
|
|
|
|
method:
|
|
description: |
|
|
The method of calling the PM-API firmware layer.
|
|
Permitted values are.
|
|
- "smc" : SMC #0, following the SMCCC
|
|
- "hvc" : HVC #0, following the SMCCC
|
|
|
|
$ref: /schemas/types.yaml#/definitions/string
|
|
enum:
|
|
- smc
|
|
- hvc
|
|
default: smc
|
|
|
|
'#address-cells':
|
|
const: 2
|
|
|
|
'#size-cells':
|
|
const: 2
|
|
|
|
xlnx,ipi-id:
|
|
description: |
|
|
Remote Xilinx IPI agent ID of which the mailbox is connected to.
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
|
|
interrupts:
|
|
maxItems: 1
|
|
|
|
ranges: true
|
|
|
|
patternProperties:
|
|
'^mailbox@[0-9a-f]+$':
|
|
description: Internal ipi mailbox node
|
|
type: object # DT nodes are json objects
|
|
properties:
|
|
xlnx,ipi-id:
|
|
description:
|
|
Remote Xilinx IPI agent ID of which the mailbox is connected to.
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
|
|
'#mbox-cells':
|
|
const: 1
|
|
description:
|
|
It contains tx(0) or rx(1) channel IPI id number.
|
|
|
|
reg:
|
|
maxItems: 4
|
|
|
|
reg-names:
|
|
items:
|
|
- const: local_request_region
|
|
- const: local_response_region
|
|
- const: remote_request_region
|
|
- const: remote_response_region
|
|
|
|
required:
|
|
- reg
|
|
- reg-names
|
|
- "#mbox-cells"
|
|
|
|
additionalProperties: false
|
|
|
|
required:
|
|
- compatible
|
|
- interrupts
|
|
- '#address-cells'
|
|
- '#size-cells'
|
|
- xlnx,ipi-id
|
|
|
|
examples:
|
|
- |
|
|
#include<dt-bindings/interrupt-controller/arm-gic.h>
|
|
|
|
amba {
|
|
#address-cells = <0x2>;
|
|
#size-cells = <0x2>;
|
|
zynqmp-mailbox {
|
|
compatible = "xlnx,zynqmp-ipi-mailbox";
|
|
interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
|
|
xlnx,ipi-id = <0>;
|
|
#address-cells = <2>;
|
|
#size-cells = <2>;
|
|
ranges;
|
|
|
|
mailbox: mailbox@ff9905c0 {
|
|
reg = <0x0 0xff9905c0 0x0 0x20>,
|
|
<0x0 0xff9905e0 0x0 0x20>,
|
|
<0x0 0xff990e80 0x0 0x20>,
|
|
<0x0 0xff990ea0 0x0 0x20>;
|
|
reg-names = "local_request_region",
|
|
"local_response_region",
|
|
"remote_request_region",
|
|
"remote_response_region";
|
|
#mbox-cells = <1>;
|
|
xlnx,ipi-id = <4>;
|
|
};
|
|
};
|
|
};
|
|
|
|
...
|