dts: arm: st: l4: add counter nodes to timers of stm32l4 series

Add counter nodes to timer nodes in dts of stm32l4 series.
This should enable the support of the basic counter API
on all stm32l4 mcus for general-purpose and basic TIMx timers.

Signed-off-by: Jan Kablitz <[email protected]>

Author: kabeljan

dts/arm/st/l4/stm32l4.dtsi

@@ -282,6 +282,12 @@
 				label = "PWM_2";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_2";
+			};
 		};
 
 		timers6: timers@40001000 {
@@ -293,6 +299,12 @@
 			st,prescaler = <0>;
 			status = "disabled";
 			label = "TIMERS_6";
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_6";
+			};
 		};
 
 		timers15: timers@40014000 {
@@ -311,6 +323,12 @@
 				label = "PWM_15";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_15";
+			};
 		};
 
 		timers16: timers@40014400 {
@@ -329,6 +347,12 @@
 				label = "PWM_16";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_16";
+			};
 		};
 
 		rtc: rtc@40002800 {

dts/arm/st/l4/stm32l432.dtsi

@@ -28,6 +28,12 @@
 			st,prescaler = <0>;
 			status = "disabled";
 			label = "TIMERS_7";
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_7";
+			};
 		};
 
 		can1: can@40006400 {

dts/arm/st/l4/stm32l452.dtsi

@@ -124,6 +124,12 @@
 				label = "PWM_3";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_3";
+			};
 		};
 
 		dac1: dac@40007400 {

dts/arm/st/l4/stm32l471.dtsi

@@ -125,6 +125,12 @@
 				label = "PWM_3";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_3";
+			};
 		};
 
 		timers4: timers@40000800 {
@@ -143,6 +149,12 @@
 				label = "PWM_4";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_4";
+			};
 		};
 
 		timers5: timers@40000c00 {
@@ -161,6 +173,12 @@
 				label = "PWM_5";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_5";
+			};
 		};
 
 		timers7: timers@40001400 {
@@ -172,6 +190,12 @@
 			st,prescaler = <0>;
 			status = "disabled";
 			label = "TIMERS_7";
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_7";
+			};
 		};
 
 		timers8: timers@40013400 {
@@ -208,6 +232,12 @@
 				label = "PWM_17";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_17";
+			};
 		};
 
 		can1: can@40006400 {

dts/arm/st/l4/stm32l4r5.dtsi

@@ -152,6 +152,12 @@
 				label = "PWM_3";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_3";
+			};
 		};
 
 		timers4: timers@40000800 {
@@ -170,6 +176,12 @@
 				label = "PWM_4";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_4";
+			};
 		};
 
 		timers5: timers@40000c00 {
@@ -188,6 +200,12 @@
 				label = "PWM_5";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_5";
+			};
 		};
 
 		timers7: timers@40001400 {
@@ -206,6 +224,12 @@
 				label = "PWM_7";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_7";
+			};
 		};
 
 		timers8: timers@40013400 {
@@ -242,6 +266,12 @@
 				label = "PWM_17";
 				#pwm-cells = <3>;
 			};
+
+			counter {
+				compatible = "st,stm32-counter";
+				status = "disabled";
+				label = "COUNTER_17";
+			};
 		};
 
 		can1: can@40006400 {