diff --git a/arch/arm/boot/dts/aspeed-g4.dtsi b/arch/arm/boot/dts/aspeed-g4.dtsi
index 2b1bb31ce390..36cb66d8cc10 100644
--- a/arch/arm/boot/dts/aspeed-g4.dtsi
+++ b/arch/arm/boot/dts/aspeed-g4.dtsi
@@ -55,6 +55,7 @@ fmc: flash-controller@1e620000 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			compatible = "aspeed,ast2400-fmc";
+			clocks = <&syscon ASPEED_CLK_AHB>;
 			status = "disabled";
 			interrupts = <19>;
 			flash@0 {
@@ -70,6 +71,7 @@ spi: flash-controller@1e630000 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			compatible = "aspeed,ast2400-spi";
+			clocks = <&syscon ASPEED_CLK_AHB>;
 			status = "disabled";
 			flash@0 {
 				reg = < 0 >;
diff --git a/arch/arm/boot/dts/aspeed-g5.dtsi b/arch/arm/boot/dts/aspeed-g5.dtsi
index 95bb04e4cee2..156b345ff20d 100644
--- a/arch/arm/boot/dts/aspeed-g5.dtsi
+++ b/arch/arm/boot/dts/aspeed-g5.dtsi
@@ -55,6 +55,7 @@ fmc: flash-controller@1e620000 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			compatible = "aspeed,ast2500-fmc";
+			clocks = <&syscon ASPEED_CLK_AHB>;
 			status = "disabled";
 			interrupts = <19>;
 			flash@0 {
@@ -80,6 +81,7 @@ spi1: flash-controller@1e630000 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			compatible = "aspeed,ast2500-spi";
+			clocks = <&syscon ASPEED_CLK_AHB>;
 			status = "disabled";
 			flash@0 {
 				reg = < 0 >;
@@ -99,6 +101,7 @@ spi2: flash-controller@1e631000 {
 			#address-cells = <1>;
 			#size-cells = <0>;
 			compatible = "aspeed,ast2500-spi";
+			clocks = <&syscon ASPEED_CLK_AHB>;
 			status = "disabled";
 			flash@0 {
 				reg = < 0 >;