xref: /openbmc/linux/Documentation/devicetree/bindings/nvmem/qcom,spmi-sdam.yaml (revision 6fdc6e23)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/nvmem/qcom,spmi-sdam.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm Technologies, Inc. SPMI SDAM DT bindings

maintainers:
  - Shyam Kumar Thella <sthella@codeaurora.org>

description: |
  The SDAM provides scratch register space for the PMIC clients. This
  memory can be used by software to store information or communicate
  to/from the PBUS.

allOf:
  - $ref: "nvmem.yaml#"

properties:
  compatible:
    enum:
      - qcom,spmi-sdam

  reg:
    maxItems: 1

  "#address-cells":
    const: 1

  "#size-cells":
    const: 1

  ranges: true

required:
  - compatible
  - reg
  - ranges

patternProperties:
  "^.*@[0-9a-f]+$":
    type: object

    properties:
      reg:
        maxItems: 1
        description:
          Offset and size in bytes within the storage device.

      bits:
        $ref: /schemas/types.yaml#/definitions/uint32-array
        maxItems: 1
        items:
          items:
            - minimum: 0
              maximum: 7
              description:
                Offset in bit within the address range specified by reg.
            - minimum: 1
              description:
                Size in bit within the address range specified by reg.

    required:
      - reg

    additionalProperties: false

unevaluatedProperties: false

examples:
  - |
      sdam_1: nvram@b000 {
          #address-cells = <1>;
          #size-cells = <1>;
          compatible = "qcom,spmi-sdam";
          reg = <0xb000 0x100>;
          ranges = <0 0xb000 0x100>;

          /* Data cells */
          restart_reason: restart@50 {
              reg = <0x50 0x1>;
              bits = <6 2>;
          };
      };
...