Bindings/arm/amlogic/amlogic,meson-mx-secbus2.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/arm/amlogic/amlogic,meson-mx-secbus2.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Amlogic Meson8/Meson8b/Meson8m2 SECBUS2 register interface
   8
   9 maintainers:
  10   - Martin Blumenstingl <martin.blumenstingl@googlemail.com>
  11
  12 description: |
  13   The Meson8/Meson8b/Meson8m2 SoCs have a register bank called SECBUS2 which
  14   contains registers for various IP blocks such as pin-controller bits for
  15   the BSD_EN and TEST_N GPIOs as well as some AO ARC core control bits.
  16   The registers can be accessed directly when not running in "secure mode".
  17   When "secure mode" is enabled then these registers have to be accessed
  18   through secure monitor calls.
  19
  20 properties:
  21   compatible:
  22     items:
  23       - enum:
  24           - amlogic,meson8-secbus2
  25           - amlogic,meson8b-secbus2
  26       - const: syscon
  27
  28   reg:
  29     maxItems: 1
  30
  31 required:
  32   - compatible
  33   - reg
  34
  35 additionalProperties: false
  36
  37 examples:
  38   - |
  39     secbus2: system-controller@4000 {
  40       compatible = "amlogic,meson8-secbus2", "syscon";
  41       reg = <0x4000 0x2000>;
  42     };