ARM: dts: stm32: Add LPtimer support to stm32mp157c

Add LPtimer definitions, depending on features they provide:
- lptimer1 & 2 can act as PWM, trigger and encoder/counter
- lptimer3 can act as PWM and trigger
- lptimer4 & 5 can act as PWM
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32mp157c.dtsi

@@ -283,6 +283,33 @@ timer@13 {
 			};
 		};
 
+		lptimer1: timer@40009000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "st,stm32-lptimer";
+			reg = <0x40009000 0x400>;
+			clocks = <&rcc LPTIM1_K>;
+			clock-names = "mux";
+			status = "disabled";
+
+			pwm {
+				compatible = "st,stm32-pwm-lp";
+				#pwm-cells = <3>;
+				status = "disabled";
+			};
+
+			trigger@0 {
+				compatible = "st,stm32-lptimer-trigger";
+				reg = <0>;
+				status = "disabled";
+			};
+
+			counter {
+				compatible = "st,stm32-lptimer-counter";
+				status = "disabled";
+			};
+		};
+
 		usart2: serial@4000e000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x4000e000 0x400>;
@@ -450,6 +477,83 @@ rcc: rcc@50000000 {
 			#reset-cells = <1>;
 		};
 
+		lptimer2: timer@50021000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "st,stm32-lptimer";
+			reg = <0x50021000 0x400>;
+			clocks = <&rcc LPTIM2_K>;
+			clock-names = "mux";
+			status = "disabled";
+
+			pwm {
+				compatible = "st,stm32-pwm-lp";
+				#pwm-cells = <3>;
+				status = "disabled";
+			};
+
+			trigger@1 {
+				compatible = "st,stm32-lptimer-trigger";
+				reg = <1>;
+				status = "disabled";
+			};
+
+			counter {
+				compatible = "st,stm32-lptimer-counter";
+				status = "disabled";
+			};
+		};
+
+		lptimer3: timer@50022000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "st,stm32-lptimer";
+			reg = <0x50022000 0x400>;
+			clocks = <&rcc LPTIM3_K>;
+			clock-names = "mux";
+			status = "disabled";
+
+			pwm {
+				compatible = "st,stm32-pwm-lp";
+				#pwm-cells = <3>;
+				status = "disabled";
+			};
+
+			trigger@2 {
+				compatible = "st,stm32-lptimer-trigger";
+				reg = <2>;
+				status = "disabled";
+			};
+		};
+
+		lptimer4: timer@50023000 {
+			compatible = "st,stm32-lptimer";
+			reg = <0x50023000 0x400>;
+			clocks = <&rcc LPTIM4_K>;
+			clock-names = "mux";
+			status = "disabled";
+
+			pwm {
+				compatible = "st,stm32-pwm-lp";
+				#pwm-cells = <3>;
+				status = "disabled";
+			};
+		};
+
+		lptimer5: timer@50024000 {
+			compatible = "st,stm32-lptimer";
+			reg = <0x50024000 0x400>;
+			clocks = <&rcc LPTIM5_K>;
+			clock-names = "mux";
+			status = "disabled";
+
+			pwm {
+				compatible = "st,stm32-pwm-lp";
+				#pwm-cells = <3>;
+				status = "disabled";
+			};
+		};
+
 		vrefbuf: vrefbuf@50025000 {
 			compatible = "st,stm32-vrefbuf";
 			reg = <0x50025000 0x8>;