[PATCH 2/3] ARM: dts: stm32: move ARM SMC watchdog to STM32MP151 SoC
From: Antonio Borneo
Date: Wed Oct 07 2026 - 11:16:12 EST
All the boards where IWDG1 is secured and monitored through OP-TEE
require Linux to control the secure watchdog through SMC calls.
Move the node arm,smc-wdt in the SoC file.
Signed-off-by: Antonio Borneo <antonio.borneo@xxxxxxxxxxx>
---
arch/arm/boot/dts/st/stm32mp151.dtsi | 6 ++++++
arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi | 7 -------
2 files changed, 6 insertions(+), 7 deletions(-)
diff --git a/arch/arm/boot/dts/st/stm32mp151.dtsi b/arch/arm/boot/dts/st/stm32mp151.dtsi
index 25f111c8aa7a4..f0b8c8f617bc5 100644
--- a/arch/arm/boot/dts/st/stm32mp151.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp151.dtsi
@@ -31,6 +31,12 @@ arm-pmu {
interrupt-parent = <&intc>;
};
+ arm_wdt: watchdog {
+ compatible = "arm,smc-wdt";
+ arm,smc-id = <0xbc000000>;
+ status = "disabled";
+ };
+
psci {
compatible = "arm,psci-1.0";
method = "smc";
diff --git a/arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi b/arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi
index 172347769e025..27ea5e79efc66 100644
--- a/arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp157f-dk2-scmi.dtsi
@@ -13,13 +13,6 @@ optee@de000000 {
no-map;
};
};
-
- arm_wdt: watchdog {
- compatible = "arm,smc-wdt";
- arm,smc-id = <0xbc000000>;
- status = "disabled";
- };
-
};
&adc {
--
2.34.1