[PATCH 0/3] ARM/arm64: dts: stm32: align watchdog DT support accross STM32MP15 platforms
From: Antonio Borneo
Date: Wed Oct 07 2026 - 11:17:31 EST
This series updates STM32MP watchdog DT descriptions to keep them aligned
with the actual secure/non-secure watchdog integration used on each
platform family.
Two watchdog access models are used:
- On ST STM32MP15 non-SCMI boards, IWDG1 is exposed as a non-secure
watchdog. In that case Linux must register the watchdog device and keep
it pinged once it has been started by the boot chain.
- On ST SCMI-based STM32MP15 boards, the watchdog is handled through
secure world services and exposed to Linux through the ARM SMC watchdog
interface.
Amelie Delaunay (2):
ARM: dts: stm32: enable iwdg1 on STM32MP15 ST boards
ARM: dts: stm32: enable ARM SMC watchdog on STM32MP15 SCMI boards
Antonio Borneo (1):
ARM: dts: stm32: move ARM SMC watchdog to STM32MP151 SoC
arch/arm/boot/dts/st/stm32mp15-scmi.dtsi | 4 ++++
arch/arm/boot/dts/st/stm32mp151.dtsi | 15 +++++++++++++++
arch/arm/boot/dts/st/stm32mp157a-dk1-scmi.dts | 5 +++++
arch/arm/boot/dts/st/stm32mp157c-dk2-scmi.dts | 5 +++++
arch/arm/boot/dts/st/stm32mp157c-ed1-scmi.dts | 5 +++++
arch/arm/boot/dts/st/stm32mp157c-ed1.dts | 5 +++++
arch/arm/boot/dts/st/stm32mp157c-ev1-scmi.dts | 5 +++++
arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi | 7 -------
arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi | 5 +++++
9 files changed, 49 insertions(+), 7 deletions(-)
base-commit: f831584128ac2a36fb4fa62fe106793d08c2dbf1
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2.34.1