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
   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@foss.st.com>
  17
  18 allOf:
  19   - $ref: nvmem.yaml#
  20
  21 properties:
  22   compatible:
  23     enum:
  24       - st,stm32f4-otp
  25       - st,stm32mp13-bsec
  26       - st,stm32mp15-bsec
  27
  28   reg:
  29     maxItems: 1
  30
  31 patternProperties:
  32   "^.*@[0-9a-f]+$":
  33     type: object
  34
  35     properties:
  36       st,non-secure-otp:
  37         description: |
  38           This property explicits a factory programmed area that both secure
  39           and non-secure worlds can access. It is needed when, by default, the
  40           related area can only be reached by the secure world.
  41         type: boolean
  42
  43 required:
  44   - "#address-cells"
  45   - "#size-cells"
  46   - compatible
  47   - reg
  48
  49 unevaluatedProperties: false
  50
  51 examples:
  52   - |
  53     efuse@1fff7800 {
  54       compatible = "st,stm32f4-otp";
  55       reg = <0x1fff7800 0x400>;
  56       #address-cells = <1>;
  57       #size-cells = <1>;
  58
  59       calib@22c {
  60         reg = <0x22c 0x2>;
  61       };
  62
  63       mac_addr@e4 {
  64         reg = <0xe4 0x8>;
  65         st,non-secure-otp;
  66       };
  67     };
  68
  69 ...