diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
index e9169eb358c1..3c785cef4f20 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
@@ -1112,4 +1112,124 @@ main_spi7: spi@2170000 {
 		clocks = <&k3_clks 383 1>;
 		status = "disabled";
 	};
+
+	main_r5fss0: r5fss@5c00000 {
+		compatible = "ti,j721s2-r5fss";
+		ti,cluster-mode = <1>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x5c00000 0x00 0x5c00000 0x20000>,
+			 <0x5d00000 0x00 0x5d00000 0x20000>;
+		power-domains = <&k3_pds 336 TI_SCI_PD_EXCLUSIVE>;
+
+		main_r5fss0_core0: r5f@5c00000 {
+			compatible = "ti,j721s2-r5f";
+			reg = <0x5c00000 0x00010000>,
+			      <0x5c10000 0x00010000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&sms>;
+			ti,sci-dev-id = <339>;
+			ti,sci-proc-ids = <0x06 0xff>;
+			resets = <&k3_reset 339 1>;
+			firmware-name = "j784s4-main-r5f0_0-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+		};
+
+		main_r5fss0_core1: r5f@5d00000 {
+			compatible = "ti,j721s2-r5f";
+			reg = <0x5d00000 0x00010000>,
+			      <0x5d10000 0x00010000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&sms>;
+			ti,sci-dev-id = <340>;
+			ti,sci-proc-ids = <0x07 0xff>;
+			resets = <&k3_reset 340 1>;
+			firmware-name = "j784s4-main-r5f0_1-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+		};
+	};
+
+	main_r5fss1: r5fss@5e00000 {
+		compatible = "ti,j721s2-r5fss";
+		ti,cluster-mode = <1>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x5e00000 0x00 0x5e00000 0x20000>,
+			 <0x5f00000 0x00 0x5f00000 0x20000>;
+		power-domains = <&k3_pds 337 TI_SCI_PD_EXCLUSIVE>;
+
+		main_r5fss1_core0: r5f@5e00000 {
+			compatible = "ti,j721s2-r5f";
+			reg = <0x5e00000 0x00010000>,
+			      <0x5e10000 0x00010000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&sms>;
+			ti,sci-dev-id = <341>;
+			ti,sci-proc-ids = <0x08 0xff>;
+			resets = <&k3_reset 341 1>;
+			firmware-name = "j784s4-main-r5f1_0-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+		};
+
+		main_r5fss1_core1: r5f@5f00000 {
+			compatible = "ti,j721s2-r5f";
+			reg = <0x5f00000 0x00010000>,
+			      <0x5f10000 0x00010000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&sms>;
+			ti,sci-dev-id = <342>;
+			ti,sci-proc-ids = <0x09 0xff>;
+			resets = <&k3_reset 342 1>;
+			firmware-name = "j784s4-main-r5f1_1-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+		};
+	};
+
+	main_r5fss2: r5fss@5900000 {
+		compatible = "ti,j721s2-r5fss";
+		ti,cluster-mode = <1>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x5900000 0x00 0x5900000 0x20000>,
+			 <0x5a00000 0x00 0x5a00000 0x20000>;
+		power-domains = <&k3_pds 338 TI_SCI_PD_EXCLUSIVE>;
+
+		main_r5fss2_core0: r5f@5900000 {
+			compatible = "ti,j721s2-r5f";
+			reg = <0x5900000 0x00010000>,
+			      <0x5910000 0x00010000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&sms>;
+			ti,sci-dev-id = <343>;
+			ti,sci-proc-ids = <0x0a 0xff>;
+			resets = <&k3_reset 343 1>;
+			firmware-name = "j784s4-main-r5f2_0-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+		};
+
+		main_r5fss2_core1: r5f@5a00000 {
+			compatible = "ti,j721s2-r5f";
+			reg = <0x5a00000 0x00010000>,
+			      <0x5a10000 0x00010000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&sms>;
+			ti,sci-dev-id = <344>;
+			ti,sci-proc-ids = <0x0b 0xff>;
+			resets = <&k3_reset 344 1>;
+			firmware-name = "j784s4-main-r5f2_1-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+		};
+	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
index f04fcb614cbe..e517043d3eb2 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
@@ -342,4 +342,44 @@ cpts@3d000 {
 			ti,cpts-periodic-outputs = <2>;
 		};
 	};
+
+	mcu_r5fss0: r5fss@41000000 {
+		compatible = "ti,j721s2-r5fss";
+		ti,cluster-mode = <1>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x41000000 0x00 0x41000000 0x20000>,
+			 <0x41400000 0x00 0x41400000 0x20000>;
+		power-domains = <&k3_pds 345 TI_SCI_PD_EXCLUSIVE>;
+
+		mcu_r5fss0_core0: r5f@41000000 {
+			compatible = "ti,j721s2-r5f";
+			reg = <0x41000000 0x00010000>,
+			      <0x41010000 0x00010000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&sms>;
+			ti,sci-dev-id = <346>;
+			ti,sci-proc-ids = <0x01 0xff>;
+			resets = <&k3_reset 346 1>;
+			firmware-name = "j784s4-mcu-r5f0_0-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+		};
+
+		mcu_r5fss0_core1: r5f@41400000 {
+			compatible = "ti,j721s2-r5f";
+			reg = <0x41400000 0x00010000>,
+			      <0x41410000 0x00010000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&sms>;
+			ti,sci-dev-id = <347>;
+			ti,sci-proc-ids = <0x02 0xff>;
+			resets = <&k3_reset 347 1>;
+			firmware-name = "j784s4-mcu-r5f0_1-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+		};
+	};
 };
