| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/apm,xgene-slimpro-mbox.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: APM X-Gene SLIMpro mailbox |
| |
| maintainers: |
| - Khuong Dinh <khuong@os.amperecomputing.com> |
| |
| description: |
| The APM X-Gene SLIMpro mailbox is used to communicate messages between |
| the ARM64 processors and the Cortex M3 (dubbed SLIMpro). It uses a simple |
| interrupt based door bell mechanism and can exchange simple messages using the |
| internal registers. |
| |
| properties: |
| compatible: |
| const: apm,xgene-slimpro-mbox |
| |
| reg: |
| maxItems: 1 |
| |
| interrupts: |
| items: |
| - description: mailbox channel 0 doorbell |
| - description: mailbox channel 1 doorbell |
| - description: mailbox channel 2 doorbell |
| - description: mailbox channel 3 doorbell |
| - description: mailbox channel 4 doorbell |
| - description: mailbox channel 5 doorbell |
| - description: mailbox channel 6 doorbell |
| - description: mailbox channel 7 doorbell |
| |
| '#mbox-cells': |
| description: Number of mailbox channel. |
| const: 1 |
| |
| required: |
| - compatible |
| - reg |
| - interrupts |
| - '#mbox-cells' |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| mailbox@10540000 { |
| compatible = "apm,xgene-slimpro-mbox"; |
| reg = <0x10540000 0xa000>; |
| #mbox-cells = <1>; |
| interrupts = <0x0 0x0 0x4>, |
| <0x0 0x1 0x4>, |
| <0x0 0x2 0x4>, |
| <0x0 0x3 0x4>, |
| <0x0 0x4 0x4>, |
| <0x0 0x5 0x4>, |
| <0x0 0x6 0x4>, |
| <0x0 0x7 0x4>; |
| }; |
