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dt-bindings: rtc: stm32: introduce new st,stm32mp25-rtc compatible

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Introduce new st,stm32mp25-rtc compatible. It is based on st,stm32mp1-rtc.

Difference is that stm32mp25 soc implements a triple protection on RTC
registers:
- Secure bit based protection
- Privileged context based protection
- Compartment ID filtering based protection
This driver will now check theses configurations before probing to avoid
exceptions and fake reads on register.

Link: https://www.st.com/resource/en/reference_manual/rm0457-stm32mp25xx-advanced-armbased-3264bit-mpus-stmicroelectronics.pdf#page=4081
Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240708153434.416287-2-valentin.caron@foss.st.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Valentin Caron 2024-07-08 17:34:33 +02:00 committed by Alexandre Belloni
parent a47d377e22
commit 1746a61a02
1 changed files with 4 additions and 1 deletions
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5
Documentation/devicetree/bindings/rtc/st,stm32-rtc.yaml
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@ -15,6 +15,7 @@ properties:
- st,stm32-rtc
- st,stm32h7-rtc
- st,stm32mp1-rtc
- st,stm32mp25-rtc
reg:
maxItems: 1
@ -90,7 +91,9 @@ allOf:
properties:
compatible:
contains:
const: st,stm32mp1-rtc
enum:
- st,stm32mp1-rtc
- st,stm32mp25-rtc
then:
properties: