diff --git a/arch/arm/boot/dts/r8a7794.dtsi b/arch/arm/boot/dts/r8a7794.dtsi
index e53765493346a2d80b678fc6789a417412cc9067..13e4a8d7302933ba7c6131cc57f36468b3b092ec 100644
--- a/arch/arm/boot/dts/r8a7794.dtsi
+++ b/arch/arm/boot/dts/r8a7794.dtsi
@@ -493,13 +493,14 @@
 		mstp3_clks: mstp3_clks@e615013c {
 			compatible = "renesas,r8a7794-mstp-clocks", "renesas,cpg-mstp-clocks";
 			reg = <0 0xe615013c 0 4>, <0 0xe6150048 0 4>;
-			clocks = <&rclk_clk>;
+			clocks = <&rclk_clk>, <&hp_clk>, <&hp_clk>;
 			#clock-cells = <1>;
 			clock-indices = <
-				R8A7794_CLK_CMT1
+				R8A7794_CLK_CMT1 R8A7794_CLK_USBDMAC0
+				R8A7794_CLK_USBDMAC1
 			>;
 			clock-output-names =
-				"cmt1";
+				"cmt1", "usbdmac0", "usbdmac1";
 		};
 		mstp7_clks: mstp7_clks@e615014c {
 			compatible = "renesas,r8a7794-mstp-clocks", "renesas,cpg-mstp-clocks";
diff --git a/include/dt-bindings/clock/r8a7794-clock.h b/include/dt-bindings/clock/r8a7794-clock.h
index 94e2bbf7ddc1297c3804aa55fe25a8631fe2a007..52492d85fea16888b28eb03922704737ccddb593 100644
--- a/include/dt-bindings/clock/r8a7794-clock.h
+++ b/include/dt-bindings/clock/r8a7794-clock.h
@@ -51,6 +51,8 @@
 
 /* MSTP3 */
 #define R8A7794_CLK_CMT1		29
+#define R8A7794_CLK_USBDMAC0		30
+#define R8A7794_CLK_USBDMAC1		31
 
 /* MSTP5 */
 #define R8A7794_CLK_THERMAL		22