# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/nvmem/st,stm32-romem.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: STMicroelectronics STM32 Factory-programmed data bindings
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description: |
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This represents STM32 Factory-programmed read only non-volatile area: locked
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flash, OTP, read-only HW regs... This contains various information such as:
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analog calibration data for temperature sensor (e.g. TS_CAL1, TS_CAL2),
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internal vref (VREFIN_CAL), unique device ID...
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maintainers:
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- Fabrice Gasnier <fabrice.gasnier@st.com>
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allOf:
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- $ref: "nvmem.yaml#"
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properties:
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compatible:
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enum:
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- st,stm32f4-otp
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- st,stm32mp15-bsec
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patternProperties:
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"^.*@[0-9a-f]+$":
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type: object
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properties:
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st,non-secure-otp:
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description: |
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This property explicits a factory programmed area that both secure
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and non-secure worlds can access. It is needed when, by default, the
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related area can only be reached by the secure world.
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type: boolean
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required:
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- "#address-cells"
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- "#size-cells"
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- compatible
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- reg
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unevaluatedProperties: false
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examples:
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- |
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efuse@1fff7800 {
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compatible = "st,stm32f4-otp";
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reg = <0x1fff7800 0x400>;
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#address-cells = <1>;
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#size-cells = <1>;
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calib@22c {
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reg = <0x22c 0x2>;
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};
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mac_addr@e4 {
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reg = <0xe4 0x8>;
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st,non-secure-otp;
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};
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};
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...
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