amlogic,meson-gxbb-mhu.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 # Copyright 2019 BayLibre, SAS
    3 %YAML 1.2
    4 ---
    5 $id: "http://devicetree.org/schemas/mailbox/amlogic,meson-gxbb-mhu.yaml#"
    6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    7 
    8 title: Amlogic Meson Message-Handling-Unit Controller
    9 
   10 maintainers:
   11   - Neil Armstrong <neil.armstrong@linaro.org>
   12 
   13 description: |
   14   The Amlogic's Meson SoCs Message-Handling-Unit (MHU) is a mailbox controller
   15   that has 3 independent channels/links to communicate with remote processor(s).
   16   MHU links are hardwired on a platform. A link raises interrupt for any
   17   received data. However, there is no specified way of knowing if the sent
   18   data has been read by the remote. This driver assumes the sender polls
   19   STAT register and the remote clears it after having read the data.
   20 
   21 properties:
   22   compatible:
   23     enum:
   24       - amlogic,meson-gxbb-mhu
   25 
   26   reg:
   27     maxItems: 1
   28 
   29   interrupts:
   30     minItems: 3
   31     description:
   32       Contains the interrupt information corresponding to each of the 3 links
   33       of MHU.
   34 
   35   "#mbox-cells":
   36     const: 1
   37 
   38 required:
   39   - compatible
   40   - reg
   41   - interrupts
   42   - "#mbox-cells"
   43 
   44 additionalProperties: false
   45 
   46 examples:
   47   - |
   48     mailbox@c883c404 {
   49           compatible = "amlogic,meson-gxbb-mhu";
   50           reg = <0xc883c404 0x4c>;
   51           interrupts = <208>, <209>, <210>;
   52           #mbox-cells = <1>;
   53     };

Cache object: 85b025639494b40f7e21393fcbbaa9d6

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sys/contrib/device-tree/Bindings/mailbox/amlogic,meson-gxbb-mhu.yaml