Documentation/devicetree/bindings/nvmem/st,stm32-romem.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/nvmem/st,stm32-romem.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: STMicroelectronics STM32 Factory-programmed data bindings
   8
   9 description: |
  10   This represents STM32 Factory-programmed read only non-volatile area: locked
  11   flash, OTP, read-only HW regs... This contains various information such as:
  12   analog calibration data for temperature sensor (e.g. TS_CAL1, TS_CAL2),
  13   internal vref (VREFIN_CAL), unique device ID...
  14
  15 maintainers:
  16   - Fabrice Gasnier <fabrice.gasnier@st.com>
  17
  18 allOf:
  19   - $ref: "nvmem.yaml#"
  20
  21 properties:
  22   compatible:
  23     enum:
  24       - st,stm32f4-otp
  25       - st,stm32mp15-bsec
  26
  27 patternProperties:
  28   "^.*@[0-9a-f]+$":
  29     type: object
  30
  31     properties:
  32       st,non-secure-otp:
  33         description: |
  34           This property explicits a factory programmed area that both secure
  35           and non-secure worlds can access. It is needed when, by default, the
  36           related area can only be reached by the secure world.
  37         type: boolean
  38
  39 required:
  40   - "#address-cells"
  41   - "#size-cells"
  42   - compatible
  43   - reg
  44
  45 unevaluatedProperties: false
  46
  47 examples:
  48   - |
  49     efuse@1fff7800 {
  50       compatible = "st,stm32f4-otp";
  51       reg = <0x1fff7800 0x400>;
  52       #address-cells = <1>;
  53       #size-cells = <1>;
  54
  55       calib@22c {
  56         reg = <0x22c 0x2>;
  57       };
  58
  59       mac_addr@e4 {
  60         reg = <0xe4 0x8>;
  61         st,non-secure-otp;
  62       };
  63     };
  64
  65 ...