[PATCH v2 1/4] ARM: dts: stm32: add iwdg1 node in stm32mp131.dtsi

Gatien Chevallier gatien.chevallier at foss.st.com
Fri Oct 31 03:00:40 PDT 2025


Add the IWDG1 node in the stm32mp131.dtsi SoC device tree file. It can
be used by Linux as the Cortex-A7 watchdog when it's configured as
non-secure.

Signed-off-by: Gatien Chevallier <gatien.chevallier at foss.st.com>
---
 arch/arm/boot/dts/st/stm32mp131.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/st/stm32mp131.dtsi b/arch/arm/boot/dts/st/stm32mp131.dtsi
index fd730aa37c22..a18da1a04fe3 100644
--- a/arch/arm/boot/dts/st/stm32mp131.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp131.dtsi
@@ -1657,6 +1657,16 @@ usbphyc_port1: usb-phy at 1 {
 					reg = <1>;
 				};
 			};
+
+			iwdg1: watchdog at 5c003000 {
+				compatible = "st,stm32mp1-iwdg";
+				reg = <0x5c003000 0x400>;
+				interrupts = <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&rcc IWDG1>, <&scmi_clk CK_SCMI_LSI>;
+				clock-names = "pclk", "lsi";
+				access-controllers = <&etzpc 12>;
+				status = "disabled";
+			};
 		};
 
 		/*

-- 
2.43.0




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