dts: stm32f4: Add wkup-pin node

For the F4 MCU family, a new DT node is defined to specify the pins
capable of waking the chip.

Signed-off-by: Tomáš Juřena <[email protected]>

Author: jurenat

dts/arm/st/f4/stm32f4.dtsi

@@ -18,6 +18,7 @@
 #include <zephyr/dt-bindings/adc/stm32f4_adc.h>
 #include <zephyr/dt-bindings/reset/stm32f2_4_7_reset.h>
 #include <zephyr/dt-bindings/sensor/qdec_stm32.h>
+#include <zephyr/dt-bindings/power/stm32_pwr.h>
 #include <freq.h>
 
 / {
@@ -586,6 +587,22 @@
 		};
 	};
 
+	pwr: power@40007000 {
+		compatible = "st,stm32-pwr";
+		reg = <0x40007000 0x400>; /* PWR register bank */
+		status = "disabled";
+
+		wkup-pins-nb = <1>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		wkup-pin@1 {
+			reg = <0x1>;
+			wkup-gpios = <&gpioa 0 STM32_PWR_WKUP_PIN_NOT_MUXED>;
+		};
+	};
+
 	die_temp: dietemp {
 		compatible = "st,stm32-temp-cal";
 		ts-cal1-addr = <0x1FFF7A2C>;