diff --git a/arch/arm/boot/dts/lpc32xx.dtsi b/arch/arm/boot/dts/lpc32xx.dtsi
index b5841fab51c1..d81fe433e3c8 100644
--- a/arch/arm/boot/dts/lpc32xx.dtsi
+++ b/arch/arm/boot/dts/lpc32xx.dtsi
@@ -479,6 +479,8 @@
 				compatible = "nxp,lpc3220-pwm";
 				reg = <0x4005C000 0x4>;
 				clocks = <&clk LPC32XX_CLK_PWM1>;
+				assigned-clocks = <&clk LPC32XX_CLK_PWM1>;
+				assigned-clock-parents = <&clk LPC32XX_CLK_PERIPH>;
 				status = "disabled";
 			};
 
@@ -486,6 +488,8 @@
 				compatible = "nxp,lpc3220-pwm";
 				reg = <0x4005C004 0x4>;
 				clocks = <&clk LPC32XX_CLK_PWM2>;
+				assigned-clocks = <&clk LPC32XX_CLK_PWM2>;
+				assigned-clock-parents = <&clk LPC32XX_CLK_PERIPH>;
 				status = "disabled";
 			};