Documentation / devicetree / bindings / nvmem / rockchip,otp.yaml


Based on kernel version 6.15. Page generated on 2025-05-29 09:09 EST.

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

title: Rockchip internal OTP (One Time Programmable) memory

maintainers:
  - Heiko Stuebner <heiko@sntech.de>

properties:
  compatible:
    enum:
      - rockchip,px30-otp
      - rockchip,rk3308-otp
      - rockchip,rk3576-otp
      - rockchip,rk3588-otp

  reg:
    maxItems: 1

  clocks:
    minItems: 3
    maxItems: 4

  clock-names:
    minItems: 3
    items:
      - const: otp
      - const: apb_pclk
      - const: phy
      - const: arb

  resets:
    minItems: 1
    maxItems: 3

  reset-names:
    minItems: 1
    maxItems: 3

required:
  - compatible
  - reg
  - clocks
  - clock-names
  - resets
  - reset-names

allOf:
  - $ref: nvmem.yaml#
  - $ref: nvmem-deprecated-cells.yaml#

  - if:
      properties:
        compatible:
          contains:
            enum:
              - rockchip,px30-otp
              - rockchip,rk3308-otp
    then:
      properties:
        clocks:
          maxItems: 3
        clock-names:
          maxItems: 3
        resets:
          maxItems: 1
        reset-names:
          items:
            - const: phy

  - if:
      properties:
        compatible:
          contains:
            enum:
              - rockchip,rk3576-otp
    then:
      properties:
        clocks:
          maxItems: 3
        clock-names:
          maxItems: 3
        resets:
          minItems: 2
          maxItems: 2
        reset-names:
          items:
            - const: otp
            - const: apb

  - if:
      properties:
        compatible:
          contains:
            enum:
              - rockchip,rk3588-otp
    then:
      properties:
        clocks:
          minItems: 4
        clock-names:
          minItems: 4
        resets:
          minItems: 3
        reset-names:
          items:
            - const: otp
            - const: apb
            - const: arb

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/px30-cru.h>
 
    soc {
        #address-cells = <2>;
        #size-cells = <2>;
 
        otp: efuse@ff290000 {
            compatible = "rockchip,px30-otp";
            reg = <0x0 0xff290000 0x0 0x4000>;
            clocks = <&cru SCLK_OTP_USR>, <&cru PCLK_OTP_NS>,
                     <&cru PCLK_OTP_PHY>;
            clock-names = "otp", "apb_pclk", "phy";
            resets = <&cru SRST_OTP_PHY>;
            reset-names = "phy";
            #address-cells = <1>;
            #size-cells = <1>;
 
            cpu_id: id@7 {
                reg = <0x07 0x10>;
            };
 
            cpu_leakage: cpu-leakage@17 {
                reg = <0x17 0x1>;
            };
 
            performance: performance@1e {
                reg = <0x1e 0x1>;
                bits = <4 3>;
            };
        };
    };