xref: /kernel/linux/linux-5.10/Documentation/devicetree/bindings/nvmem/imx-ocotp.yaml (revision 8c2ecf20)

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

title: Freescale i.MX6 On-Chip OTP Controller (OCOTP) device tree bindings

maintainers:
  - Anson Huang <Anson.Huang@nxp.com>

description: |
  This binding represents the on-chip eFuse OTP controller found on
  i.MX6Q/D, i.MX6DL/S, i.MX6SL, i.MX6SX, i.MX6UL, i.MX6ULL/ULZ, i.MX6SLL,
  i.MX7D/S, i.MX7ULP, i.MX8MQ, i.MX8MM, i.MX8MN and i.MX8MP SoCs.

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

properties:
  compatible:
    oneOf:
      - items:
          - enum:
              - fsl,imx6q-ocotp
              - fsl,imx6sl-ocotp
              - fsl,imx6sx-ocotp
              - fsl,imx6ul-ocotp
              - fsl,imx6ull-ocotp
              - fsl,imx7d-ocotp
              - fsl,imx6sll-ocotp
              - fsl,imx7ulp-ocotp
              - fsl,imx8mq-ocotp
              - fsl,imx8mm-ocotp
          - const: syscon
      - items:
          - enum:
              - fsl,imx8mn-ocotp
              # i.MX8MP not really compatible with fsl,imx8mm-ocotp, however
              # the code for getting SoC revision depends on fsl,imx8mm-ocotp
              # compatible.
              - fsl,imx8mp-ocotp
          - const: fsl,imx8mm-ocotp
          - const: syscon

  reg:
    maxItems: 1

  "#address-cells":
    const: 1

  "#size-cells":
    const: 1

  clocks:
    maxItems: 1

required:
  - "#address-cells"
  - "#size-cells"
  - compatible
  - reg

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

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

    required:
      - reg

    additionalProperties: false

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/imx6sx-clock.h>

    ocotp: efuse@21bc000 {
        #address-cells = <1>;
        #size-cells = <1>;
        compatible = "fsl,imx6sx-ocotp", "syscon";
        reg = <0x021bc000 0x4000>;
        clocks = <&clks IMX6SX_CLK_OCOTP>;

        cpu_speed_grade: speed-grade@10 {
            reg = <0x10 4>;
        };

        tempmon_calib: calib@38 {
            reg = <0x38 4>;
        };

        tempmon_temp_grade: temp-grade@20 {
            reg = <0x20 4>;
        };
    };

...