added servo

boards/nucleo_h563zi.overlay

@@ -1,20 +1,27 @@
 / {
     aliases {
-        led0 = &user_led;
+        led0 = &red_led_1;
+        led1 = &yellow_led_1;
+        led2 = &green_led_1;
+
+        servo0 = &pwm_servo0;
     };
 
-    leds {
-        compatible = "gpio-leds";
-        user_led: user_led_0 {
-            gpios = <&gpiob 0 GPIO_ACTIVE_HIGH>;
-            label = "USER_LED_0";
-        };
-    };
+    pwmleds: pwmleds {
+		compatible = "pwm-leds";
+		status = "okay";
+
+		pwm_servo0: pwm_servo0 {
+			pwms = <&pwm4 3 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
+			label = "servo 0";
+		};
+	};
+
 };
 
 &uart4 {
     status = "okay";
-    current-speed = <921600>;
+    current-speed = <460800>;
     pinctrl-0 = <&uart4_tx_pa0 &uart4_rx_pd0>;
     pinctrl-names = "default";
 };
@@ -23,15 +30,13 @@
     status = "okay";
 };
 
-&timers1 {
+&timers4 {
     status = "okay";
+    st,prescaler = <119>;
 
-    st,prescaler = <0>;   /* Required */
-
-    pwm0: pwm {
-        compatible = "st,stm32-pwm";
+    pwm4: pwm {
         status = "okay";
-        pinctrl-0 = <&tim1_ch1_pa8>;
+        pinctrl-0 = <&tim4_ch3_pb8>;
         pinctrl-names = "default";
     };
-};
+};