Define and enable pwm1 and pwm3 for stm32f469 discovery board

Signed-off-by: Benjamin Gaignard <redacted>
---
 arch/arm/boot/dts/stm32f469-disco.dts | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm/boot/dts/stm32f469-disco.dts b/arch/arm/boot/dts/stm32f469-disco.dts
index 8a163d7..92552d3 100644
--- a/arch/arm/boot/dts/stm32f469-disco.dts
+++ b/arch/arm/boot/dts/stm32f469-disco.dts

@@ -81,3 +81,31 @@
 &usart3 {
 	status = "okay";
 };
+
+&timers1 {
+	status = "okay";
+
+	pwm {
+		pinctrl-0 = <&pwm1_pins>;
+		pinctrl-names = "default";
+		status = "okay";
+	};
+
+	timer at 0 {
+		status = "okay";
+	};
+};
+
+&timers3 {
+	status = "okay";
+
+	pwm {
+		pinctrl-0 = <&pwm3_pins>;
+		pinctrl-names = "default";
+		status = "okay";
+	};
+
+	timer at 2 {
+		status = "okay";
+	};
+};