amlogic,meson-mx-ao-arc.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: "http://devicetree.org/schemas/remoteproc/amlogic,meson-mx-ao-arc.yaml#"
    5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    6 
    7 title: Amlogic Meson AO ARC Remote Processor bindings
    8 
    9 description:
   10   Amlogic Meson6, Meson8, Meson8b and Meson8m2 SoCs embed an ARC core
   11   controller for always-on operations, typically used for managing
   12   system suspend. Meson6 and older use a ARC core based on the ARCv1
   13   ISA, while Meson8, Meson8b and Meson8m2 use an ARC EM4 (ARCv2 ISA)
   14   core.
   15 
   16 maintainers:
   17   - Martin Blumenstingl <martin.blumenstingl@googlemail.com>
   18 
   19 properties:
   20   compatible:
   21     items:
   22       - enum:
   23           - amlogic,meson8-ao-arc
   24           - amlogic,meson8b-ao-arc
   25       - const: amlogic,meson-mx-ao-arc
   26 
   27   firmware-name:
   28     $ref: /schemas/types.yaml#/definitions/string
   29     description:
   30       The name of the firmware which should be loaded for this remote
   31       processor.
   32 
   33   reg:
   34     description:
   35       Address ranges of the remap and CPU control addresses for the
   36       remote processor.
   37     minItems: 2
   38 
   39   reg-names:
   40     items:
   41       - const: remap
   42       - const: cpu
   43 
   44   resets:
   45     minItems: 1
   46 
   47   clocks:
   48     minItems: 1
   49 
   50   sram:
   51     $ref: /schemas/types.yaml#/definitions/phandle
   52     description:
   53       phandles to a reserved SRAM region which is used as the memory of
   54       the ARC core. The region should be defined as child nodes of the
   55       AHB SRAM node as per the generic bindings in
   56       Documentation/devicetree/bindings/sram/sram.yaml
   57 
   58   amlogic,secbus2:
   59     $ref: /schemas/types.yaml#/definitions/phandle
   60     description:
   61       A phandle to the SECBUS2 region which contains some configuration
   62       bits of this remote processor
   63 
   64 required:
   65   - compatible
   66   - reg
   67   - reg-names
   68   - resets
   69   - clocks
   70   - sram
   71   - amlogic,secbus2
   72 
   73 additionalProperties: false
   74 
   75 examples:
   76   - |
   77     remoteproc@1c {
   78       compatible= "amlogic,meson8-ao-arc", "amlogic,meson-mx-ao-arc";
   79       reg = <0x1c 0x8>, <0x38 0x8>;
   80       reg-names = "remap", "cpu";
   81       resets = <&media_cpu_reset>;
   82       clocks = <&media_cpu_clock>;
   83       sram = <&ahb_sram_ao_arc>;
   84       amlogic,secbus2 = <&secbus2>;
   85     };
   86 
   87 ...

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sys/contrib/device-tree/Bindings/remoteproc/amlogic,meson-mx-ao-arc.yaml