[PATCH 3/3] ARM: dts: stm32: enable ARM SMC watchdog on STM32MP15 SCMI boards

[Antonio Borneo <antonio.borneo@foss.st.com>]

From: Amelie Delaunay <amelie.delaunay@foss.st.com>

On STM32MP15 SCMI boards, IWDG1 is secured and monitored through
OP-TEE.
Enable the arm,smc-wdt node on ST SCMI board variants so Linux can
control the secure watchdog through SMC calls.

Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
---
 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-ev1-scmi.dts | 5 +++++
 4 files changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/st/stm32mp157a-dk1-scmi.dts b/arch/arm/boot/dts/st/stm32mp157a-dk1-scmi.dts
index 53e40e2f776b7..345c5694abf50 100644
--- a/arch/arm/boot/dts/st/stm32mp157a-dk1-scmi.dts
+++ b/arch/arm/boot/dts/st/stm32mp157a-dk1-scmi.dts
@@ -21,6 +21,11 @@ optee@de000000 {
 	};
 };
 
+&arm_wdt {
+	timeout-sec = <32>;
+	status = "okay";
+};
+
 &cpu0 {
 	clocks = <&scmi_clk CK_SCMI_MPU>;
 };
diff --git a/arch/arm/boot/dts/st/stm32mp157c-dk2-scmi.dts b/arch/arm/boot/dts/st/stm32mp157c-dk2-scmi.dts
index 0790ed426ebc0..8e32fa89c8a1b 100644
--- a/arch/arm/boot/dts/st/stm32mp157c-dk2-scmi.dts
+++ b/arch/arm/boot/dts/st/stm32mp157c-dk2-scmi.dts
@@ -21,6 +21,11 @@ optee@de000000 {
 	};
 };
 
+&arm_wdt {
+	timeout-sec = <32>;
+	status = "okay";
+};
+
 &cpu0 {
 	clocks = <&scmi_clk CK_SCMI_MPU>;
 };
diff --git a/arch/arm/boot/dts/st/stm32mp157c-ed1-scmi.dts b/arch/arm/boot/dts/st/stm32mp157c-ed1-scmi.dts
index 0a3894aff4aea..ac4d411005032 100644
--- a/arch/arm/boot/dts/st/stm32mp157c-ed1-scmi.dts
+++ b/arch/arm/boot/dts/st/stm32mp157c-ed1-scmi.dts
@@ -21,6 +21,11 @@ optee@fe000000 {
 	};
 };
 
+&arm_wdt {
+	timeout-sec = <32>;
+	status = "okay";
+};
+
 &cpu0 {
 	clocks = <&scmi_clk CK_SCMI_MPU>;
 };
diff --git a/arch/arm/boot/dts/st/stm32mp157c-ev1-scmi.dts b/arch/arm/boot/dts/st/stm32mp157c-ev1-scmi.dts
index c2b6efb1cbb74..6b26d87f7edef 100644
--- a/arch/arm/boot/dts/st/stm32mp157c-ev1-scmi.dts
+++ b/arch/arm/boot/dts/st/stm32mp157c-ev1-scmi.dts
@@ -21,6 +21,11 @@ optee@fe000000 {
 	};
 };
 
+&arm_wdt {
+	timeout-sec = <32>;
+	status = "okay";
+};
+
 &cpu0 {
 	clocks = <&scmi_clk CK_SCMI_MPU>;
 };
-- 
2.34.1