From: Gatien Chevallier <gatien.chevallier@foss.st.com>
Date: Fri, 31 Oct 2025 10:00:41 +0000 (+0100)
Subject: ARM: dts: stm32: add the ARM SMC watchdog in stm32mp131.dtsi
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5512618b583670ef2ac17af43eee66745c8885c7;p=thirdparty%2Fkernel%2Fstable.git

ARM: dts: stm32: add the ARM SMC watchdog in stm32mp131.dtsi

Add the arm_wdt node in the stm32mp131.dtsi SoC device tree file. When
the platform watchdog is managed by the secure world, SMC calls are used
to interact with it.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Link: https://lore.kernel.org/r/20251031-iwdg1-v2-2-2dc6e0116725@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
---

diff --git a/arch/arm/boot/dts/st/stm32mp131.dtsi b/arch/arm/boot/dts/st/stm32mp131.dtsi
index a18da1a04fe3..6506b9109b90 100644
--- a/arch/arm/boot/dts/st/stm32mp131.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp131.dtsi
@@ -29,6 +29,12 @@
 		interrupt-parent = <&intc>;
 	};
 
+	arm_wdt: watchdog {
+		compatible = "arm,smc-wdt";
+		arm,smc-id = <0xbc000000>;
+		status = "disabled";
+	};
+
 	firmware {
 		optee {
 			method = "smc";