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STMicroelectronics STM32 Factory-programmed data device tree bindings
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...
Required properties:
- compatible: Should be one of:
- reg: Offset and length of factory-programmed area.
- #address-cells: Should be '<1>'.
- #size-cells: Should be '<1>'.
Optional Data cells:
- Must be child nodes as described in nvmem.txt.
Example on stm32f4:
romem: nvmem@1fff7800 {
compatible = "st,stm32f4-otp";
reg = <0x1fff7800 0x400>;
#address-cells = <1>;
#size-cells = <1>;
/* Data cells: ts_cal1 at 0x1fff7a2c */
ts_cal1: calib@22c {
reg = <0x22c 0x2>;