[PATCH v2 3/3] ARM: dts: stm32: enable SMC watchdog for STM32MP15 SCMI config

[Yann Gautier]

For this configuration, the watchdog (iwdg1) is secured and managed by
OP-TEE. Add an watchdog node with arm,smc-wdt compatible, and disable
iwdg2 node which is then no more used.

Signed-off-by: Yann Gautier <yann.gautier at foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard at foss.st.com>
---

(no changes since v1)

 arch/arm/dts/stm32mp15-scmi-u-boot.dtsi | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi b/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi
index 79494ecad90a..600316205fcc 100644
--- a/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi
@@ -21,6 +21,13 @@
 		pinctrl1 = &pinctrl_z;
 	};
 
+	arm_wdt: watchdog {
+		compatible = "arm,smc-wdt";
+		arm,smc-id = <0xbc000000>;
+		timeout-sec = <32>;
+		status = "okay";
+	};
+
 	binman: binman {
 		multiple-images;
 	};
@@ -103,7 +110,7 @@
 };
 
 &iwdg2 {
-	bootph-all;
+	status = "disabled";
 };
 
 /* pre-reloc probe = reserve video frame buffer in video_reserve() */
-- 
2.34.1