The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/arm/amlogic/amlogic,meson-gx-ao-secure.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/arm/amlogic/amlogic,meson-gx-ao-secure.yaml#"
    6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    7 
    8 title: Amlogic Meson Firmware registers Interface
    9 
   10 maintainers:
   11   - Neil Armstrong <neil.armstrong@linaro.org>
   12 
   13 description: |
   14   The Meson SoCs have a register bank with status and data shared with the
   15   secure firmware.
   16 
   17 # We need a select here so we don't match all nodes with 'syscon'
   18 select:
   19   properties:
   20     compatible:
   21       contains:
   22         const: amlogic,meson-gx-ao-secure
   23   required:
   24     - compatible
   25 
   26 properties:
   27   compatible:
   28     items:
   29       - const: amlogic,meson-gx-ao-secure
   30       - const: syscon
   31 
   32   reg:
   33     maxItems: 1
   34 
   35   amlogic,has-chip-id:
   36     description: |
   37       A firmware register encodes the SoC type, package and revision
   38       information on the Meson GX SoCs. If present, the interface gives
   39       the current SoC version.
   40     type: boolean
   41 
   42 required:
   43   - compatible
   44   - reg
   45 
   46 additionalProperties: false
   47 
   48 examples:
   49   - |
   50     ao-secure@140 {
   51           compatible = "amlogic,meson-gx-ao-secure", "syscon";
   52           reg = <0x140 0x140>;
   53           amlogic,has-chip-id;
   54     };

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