ARM: dts: stm32: enable SMC watchdog for STM32MP15 SCMI config

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@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

diff --git a/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi b/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi
index 79494ecad90a8873397ab339d145fa0fdc835a2b..600316205fcc7448aa21a1eb073a87eb7a299bb6 100644 (file)
--- 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() */