mtk,scp.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/remoteproc/mtk,scp.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Mediatek SCP Bindings
    8 
    9 maintainers:
   10   - Tinghan Shen <tinghan.shen@mediatek.com>
   11 
   12 description:
   13   This binding provides support for ARM Cortex M4 Co-processor found on some
   14   Mediatek SoCs.
   15 
   16 properties:
   17   compatible:
   18     enum:
   19       - mediatek,mt8183-scp
   20       - mediatek,mt8186-scp
   21       - mediatek,mt8188-scp
   22       - mediatek,mt8192-scp
   23       - mediatek,mt8195-scp
   24 
   25   reg:
   26     description:
   27       Should contain the address ranges for memory regions SRAM, CFG, and,
   28       on some platforms, L1TCM.
   29     minItems: 2
   30     maxItems: 3
   31 
   32   reg-names:
   33     minItems: 2
   34     items:
   35       - const: sram
   36       - const: cfg
   37       - const: l1tcm
   38 
   39   clocks:
   40     description:
   41       Clock for co-processor (see ../clock/clock-bindings.txt).
   42       Required by mt8183 and mt8192.
   43     maxItems: 1
   44 
   45   clock-names:
   46     const: main
   47 
   48   interrupts:
   49     maxItems: 1
   50 
   51   firmware-name:
   52     $ref: /schemas/types.yaml#/definitions/string
   53     description:
   54       If present, name (or relative path) of the file within the
   55       firmware search path containing the firmware image used when
   56       initializing SCP.
   57 
   58   memory-region:
   59     maxItems: 1
   60 
   61 required:
   62   - compatible
   63   - reg
   64   - reg-names
   65 
   66 allOf:
   67   - if:
   68       properties:
   69         compatible:
   70           enum:
   71             - mediatek,mt8183-scp
   72             - mediatek,mt8192-scp
   73     then:
   74       required:
   75         - clocks
   76         - clock-names
   77 
   78   - if:
   79       properties:
   80         compatible:
   81           enum:
   82             - mediatek,mt8183-scp
   83             - mediatek,mt8186-scp
   84             - mediatek,mt8188-scp
   85     then:
   86       properties:
   87         reg:
   88           maxItems: 2
   89         reg-names:
   90           maxItems: 2
   91 
   92 additionalProperties:
   93   type: object
   94   description:
   95     Subnodes of the SCP represent rpmsg devices. The names of the devices
   96     are not important. The properties of these nodes are defined by the
   97     individual bindings for the rpmsg devices.
   98   properties:
   99     mediatek,rpmsg-name:
  100       $ref: /schemas/types.yaml#/definitions/string-array
  101       description:
  102         Contains the name for the rpmsg device. Used to match
  103         the subnode to rpmsg device announced by SCP.
  104 
  105   required:
  106     - mediatek,rpmsg-name
  107 
  108 examples:
  109   - |
  110     #include <dt-bindings/clock/mt8192-clk.h>
  111 
  112     scp@10500000 {
  113         compatible = "mediatek,mt8192-scp";
  114         reg = <0x10500000 0x80000>,
  115               <0x10700000 0x8000>,
  116               <0x10720000 0xe0000>;
  117         reg-names = "sram", "cfg", "l1tcm";
  118         clocks = <&infracfg CLK_INFRA_SCPSYS>;
  119         clock-names = "main";
  120 
  121         cros_ec {
  122             mediatek,rpmsg-name = "cros-ec-rpmsg";
  123         };
  124     };

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sys/contrib/device-tree/Bindings/remoteproc/mtk,scp.yaml