| Message ID | 1551349196-8956-2-git-send-email-fabrice.gasnier@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add nvmem support on STM32 | expand |
On Thu, 28 Feb 2019 11:19:51 +0100, Fabrice Gasnier wrote: > Add documentation for STMicroelectronics STM32 Factory-programmed > read only memory area. > > Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> > --- > Changes in v2: > - update "st,stm32f4-otp" compatible as discussed with Rob > --- > .../devicetree/bindings/nvmem/st,stm32-romem.txt | 31 ++++++++++++++++++++++ > 1 file changed, 31 insertions(+) > create mode 100644 Documentation/devicetree/bindings/nvmem/st,stm32-romem.txt > Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/nvmem/st,stm32-romem.txt b/Documentation/devicetree/bindings/nvmem/st,stm32-romem.txt new file mode 100644 index 0000000..142a51d --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/st,stm32-romem.txt @@ -0,0 +1,31 @@ +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: + "st,stm32f4-otp" + "st,stm32mp15-bsec" +- 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>; + }; + ... + };
Add documentation for STMicroelectronics STM32 Factory-programmed read only memory area. Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> --- Changes in v2: - update "st,stm32f4-otp" compatible as discussed with Rob --- .../devicetree/bindings/nvmem/st,stm32-romem.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/st,stm32-romem.txt