0001 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/nvmem/st,stm32-romem.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: STMicroelectronics STM32 Factory-programmed data bindings
0008
0009 description: |
0010 This represents STM32 Factory-programmed read only non-volatile area: locked
0011 flash, OTP, read-only HW regs... This contains various information such as:
0012 analog calibration data for temperature sensor (e.g. TS_CAL1, TS_CAL2),
0013 internal vref (VREFIN_CAL), unique device ID...
0014
0015 maintainers:
0016 - Fabrice Gasnier <fabrice.gasnier@foss.st.com>
0017
0018 allOf:
0019 - $ref: "nvmem.yaml#"
0020
0021 properties:
0022 compatible:
0023 enum:
0024 - st,stm32f4-otp
0025 - st,stm32mp15-bsec
0026
0027 reg:
0028 maxItems: 1
0029
0030 patternProperties:
0031 "^.*@[0-9a-f]+$":
0032 type: object
0033
0034 properties:
0035 st,non-secure-otp:
0036 description: |
0037 This property explicits a factory programmed area that both secure
0038 and non-secure worlds can access. It is needed when, by default, the
0039 related area can only be reached by the secure world.
0040 type: boolean
0041
0042 required:
0043 - "#address-cells"
0044 - "#size-cells"
0045 - compatible
0046 - reg
0047
0048 unevaluatedProperties: false
0049
0050 examples:
0051 - |
0052 efuse@1fff7800 {
0053 compatible = "st,stm32f4-otp";
0054 reg = <0x1fff7800 0x400>;
0055 #address-cells = <1>;
0056 #size-cells = <1>;
0057
0058 calib@22c {
0059 reg = <0x22c 0x2>;
0060 };
0061
0062 mac_addr@e4 {
0063 reg = <0xe4 0x8>;
0064 st,non-secure-otp;
0065 };
0066 };
0067
0068 ...
