diff --git a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
index 7d00fe836094..777b89ed6849 100644
--- a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
@@ -413,6 +413,9 @@ lpuart4: serial@29390000 {
 				interrupts = <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&pcc3 IMX8ULP_CLK_LPUART4>;
 				clock-names = "ipg";
+				assigned-clocks = <&pcc3 IMX8ULP_CLK_LPUART4>;
+				assigned-clock-parents = <&cgc1 IMX8ULP_CLK_FROSC_DIV2>;
+				assigned-clock-rates = <48000000>;
 				dmas = <&edma1 55 0 FSL_EDMA_RX>, <&edma1 56 0 0>;
 				dma-names = "rx", "tx";
 				status = "disabled";
@@ -424,6 +427,9 @@ lpuart5: serial@293a0000 {
 				interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&pcc3 IMX8ULP_CLK_LPUART5>;
 				clock-names = "ipg";
+				assigned-clocks = <&pcc3 IMX8ULP_CLK_LPUART5>;
+				assigned-clock-parents = <&cgc1 IMX8ULP_CLK_SOSC_DIV2>;
+				assigned-clock-rates = <24000000>;
 				dmas = <&edma1 57 0 FSL_EDMA_RX>, <&edma1 58 0 0>;
 				dma-names = "rx", "tx";
 				status = "disabled";
@@ -529,6 +535,9 @@ lpuart6: serial@29860000 {
 				interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&pcc4 IMX8ULP_CLK_LPUART6>;
 				clock-names = "ipg";
+				assigned-clocks = <&pcc4 IMX8ULP_CLK_LPUART6>;
+				assigned-clock-parents = <&cgc1 IMX8ULP_CLK_FROSC_DIV2>;
+				assigned-clock-rates = <48000000>;
 				dmas = <&edma1 59 0 FSL_EDMA_RX>, <&edma1 60 0 0>;
 				dma-names = "rx", "tx";
 				status = "disabled";
@@ -540,6 +549,9 @@ lpuart7: serial@29870000 {
 				interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&pcc4 IMX8ULP_CLK_LPUART7>;
 				clock-names = "ipg";
+				assigned-clocks = <&pcc4 IMX8ULP_CLK_LPUART7>;
+				assigned-clock-parents = <&cgc1 IMX8ULP_CLK_FROSC_DIV2>;
+				assigned-clock-rates = <48000000>;
 				dmas = <&edma1 61 0 FSL_EDMA_RX>, <&edma1 62 0 0>;
 				dma-names = "rx", "tx";
 				status = "disabled";