cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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apple,mailbox.yaml (2472B)

      1# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
      2%YAML 1.2
      3---
      4$id: http://devicetree.org/schemas/mailbox/apple,mailbox.yaml#
      5$schema: http://devicetree.org/meta-schemas/core.yaml#
      6
      7title: Apple Mailbox Controller
      8
      9maintainers:
     10  - Hector Martin <marcan@marcan.st>
     11  - Sven Peter <sven@svenpeter.dev>
     12
     13description:
     14  The Apple mailbox consists of two FIFOs used to exchange 64+32 bit
     15  messages between the main CPU and a co-processor. Multiple instances
     16  of this mailbox can be found on Apple SoCs.
     17  One of the two FIFOs is used to send data to a co-processor while the other
     18  FIFO is used for the other direction.
     19  Various clients implement different IPC protocols based on these simple
     20  messages and shared memory buffers.
     21
     22properties:
     23  compatible:
     24    oneOf:
     25      - description:
     26          ASC mailboxes are the most common variant found on the M1 used
     27          for example for the display controller, the system management
     28          controller and the NVMe coprocessor.
     29        items:
     30          - enum:
     31              - apple,t8103-asc-mailbox
     32              - apple,t6000-asc-mailbox
     33          - const: apple,asc-mailbox-v4
     34
     35      - description:
     36          M3 mailboxes are an older variant with a slightly different MMIO
     37          interface still found on the M1. It is used for the Thunderbolt
     38          co-processors.
     39        items:
     40          - enum:
     41              - apple,t8103-m3-mailbox
     42              - apple,t6000-m3-mailbox
     43          - const: apple,m3-mailbox-v2
     44
     45  reg:
     46    maxItems: 1
     47
     48  interrupts:
     49    items:
     50      - description: send fifo is empty interrupt
     51      - description: send fifo is not empty interrupt
     52      - description: receive fifo is empty interrupt
     53      - description: receive fifo is not empty interrupt
     54
     55  interrupt-names:
     56    items:
     57      - const: send-empty
     58      - const: send-not-empty
     59      - const: recv-empty
     60      - const: recv-not-empty
     61
     62  "#mbox-cells":
     63    const: 0
     64
     65  power-domains:
     66    maxItems: 1
     67
     68required:
     69  - compatible
     70  - reg
     71  - interrupts
     72  - interrupt-names
     73  - "#mbox-cells"
     74
     75additionalProperties: false
     76
     77examples:
     78  - |
     79        mailbox@77408000 {
     80                compatible = "apple,t8103-asc-mailbox", "apple,asc-mailbox-v4";
     81                reg = <0x77408000 0x4000>;
     82                interrupts = <1 583 4>, <1 584 4>, <1 585 4>, <1 586 4>;
     83                interrupt-names = "send-empty", "send-not-empty",
     84                 "recv-empty", "recv-not-empty";
     85                #mbox-cells = <0>;
     86        };