| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 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 | ... |