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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/nvmem/st,stm32-romem.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: STMicroelectronics STM32 Factory-programmed data
description: |
This represents STM32 Factory-programmed read only non-volatile area: locked
flash, OTP, read-only HW regs... This contains various information such as:
analog calibration data for temperature sensor (e.g. TS_CAL1, TS_CAL2),
internal vref (VREFIN_CAL), unique device ID...
maintainers:
- Fabrice Gasnier <fabrice.gasnier@foss.st.com>
allOf:
- $ref: nvmem.yaml#
properties:
compatible:
enum:
- st,stm32f4-otp
- st,stm32mp13-bsec
- st,stm32mp15-bsec
- st,stm32mp25-bsec
reg:
maxItems: 1
patternProperties:
"^.*@[0-9a-f]+$":
type: object
properties:
st,non-secure-otp:
description: |
This property explicits a factory programmed area that both secure
and non-secure worlds can access. It is needed when, by default, the
related area can only be reached by the secure world.
type: boolean
required:
- "#address-cells"
- "#size-cells"
- compatible
- reg
unevaluatedProperties: false
examples:
- |
efuse@1fff7800 {
compatible = "st,stm32f4-otp";
reg = <0x1fff7800 0x400>;
#address-cells = <1>;
#size-cells = <1>;
calib@22c {
reg = <0x22c 0x2>;
};
mac_addr@e4 {
reg = <0xe4 0x8>;
st,non-secure-otp;
};
};
...
|
