diff --git a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
index 7bdf5342f58f..aec720f35578 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi
@@ -95,4 +95,42 @@ adc {
 			compatible = "ti,am654-adc", "ti,am3359-adc";
 		};
 	};
+
+	fss: fss@47000000 {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		ospi0: spi@47040000 {
+			compatible = "ti,am654-ospi", "cdns,qspi-nor";
+			reg = <0x0 0x47040000 0x0 0x100>,
+				<0x5 0x00000000 0x1 0x0000000>;
+			interrupts = <GIC_SPI 552 IRQ_TYPE_LEVEL_HIGH>;
+			cdns,fifo-depth = <256>;
+			cdns,fifo-width = <4>;
+			cdns,trigger-address = <0x50000000>;
+			clocks = <&k3_clks 55 5>;
+			assigned-clocks = <&k3_clks 55 5>;
+			assigned-clock-parents = <&k3_clks 55 7>;
+			assigned-clock-rates = <166666666>;
+			power-domains = <&k3_pds 55 TI_SCI_PD_EXCLUSIVE>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+
+		ospi1: spi@47050000 {
+			compatible = "ti,am654-ospi", "cdns,qspi-nor";
+			reg = <0x0 0x47050000 0x0 0x100>,
+				<0x7 0x00000000 0x1 0x00000000>;
+			interrupts = <GIC_SPI 553 IRQ_TYPE_LEVEL_HIGH>;
+			cdns,fifo-depth = <256>;
+			cdns,fifo-width = <4>;
+			cdns,trigger-address = <0x58000000>;
+			clocks = <&k3_clks 55 16>;
+			power-domains = <&k3_pds 55 TI_SCI_PD_EXCLUSIVE>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
+	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am65.dtsi b/arch/arm64/boot/dts/ti/k3-am65.dtsi
index 6dfccd5d56c8..d38720bc2551 100644
--- a/arch/arm64/boot/dts/ti/k3-am65.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65.dtsi
@@ -80,7 +80,11 @@ cbass_main: interconnect@100000 {
 			 <0x00 0x42040000 0x00 0x42040000 0x00 0x03ac2400>,
 			 <0x00 0x45100000 0x00 0x45100000 0x00 0x00c24000>,
 			 <0x00 0x46000000 0x00 0x46000000 0x00 0x00200000>,
-			 <0x00 0x47000000 0x00 0x47000000 0x00 0x00068400>;
+			 <0x00 0x47000000 0x00 0x47000000 0x00 0x00068400>,
+			 <0x00 0x50000000 0x00 0x50000000 0x00 0x8000000>,
+			 <0x00 0x70000000 0x00 0x70000000 0x00 0x200000>,
+			 <0x05 0x00000000 0x05 0x00000000 0x01 0x0000000>,
+			 <0x07 0x00000000 0x07 0x00000000 0x01 0x0000000>;
 
 		cbass_mcu: interconnect@28380000 {
 			compatible = "simple-bus";
@@ -94,7 +98,10 @@ cbass_mcu: interconnect@28380000 {
 				 <0x00 0x42040000 0x00 0x42040000 0x00 0x03ac2400>, /* WKUP */
 				 <0x00 0x45100000 0x00 0x45100000 0x00 0x00c24000>, /* MMRs, remaining NAVSS */
 				 <0x00 0x46000000 0x00 0x46000000 0x00 0x00200000>, /* CPSW */
-				 <0x00 0x47000000 0x00 0x47000000 0x00 0x00068400>; /* OSPI space 1 */
+				 <0x00 0x47000000 0x00 0x47000000 0x00 0x00068400>, /* OSPI space 1 */
+				 <0x00 0x50000000 0x00 0x50000000 0x00 0x8000000>, /*  FSS OSPI0 data region 1 */
+				 <0x05 0x00000000 0x05 0x00000000 0x01 0x0000000>, /* FSS OSPI0 data region 3*/
+				 <0x07 0x00000000 0x07 0x00000000 0x01 0x0000000>; /* FSS OSPI1 data region 3*/
 
 			cbass_wakeup: interconnect@42040000 {
 				compatible = "simple-bus";
diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
index 8a85b482ad31..94bec7aa9baf 100644
--- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
@@ -69,6 +69,22 @@ AM65X_WKUP_IOPAD(0x0030, PIN_INPUT, 7) /* (R5) WKUP_GPIO0_24 */
 			AM65X_WKUP_IOPAD(0x003c, PIN_INPUT, 7) /* (P2) WKUP_GPIO0_27 */
 		>;
 	};
+
+	mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-pins_default {
+		pinctrl-single,pins = <
+			AM65X_WKUP_IOPAD(0x0000, PIN_OUTPUT, 0) /* (V1) MCU_OSPI0_CLK */
+			AM65X_WKUP_IOPAD(0x0008, PIN_INPUT, 0)	 /* (U2) MCU_OSPI0_DQS */
+			AM65X_WKUP_IOPAD(0x000c, PIN_INPUT, 0)  /* (U4) MCU_OSPI0_D0 */
+			AM65X_WKUP_IOPAD(0x0010, PIN_INPUT, 0)  /* (U5) MCU_OSPI0_D1 */
+			AM65X_WKUP_IOPAD(0x0014, PIN_INPUT, 0)  /* (T2) MCU_OSPI0_D2 */
+			AM65X_WKUP_IOPAD(0x0018, PIN_INPUT, 0)  /* (T3) MCU_OSPI0_D3 */
+			AM65X_WKUP_IOPAD(0x001c, PIN_INPUT, 0)  /* (T4) MCU_OSPI0_D4 */
+			AM65X_WKUP_IOPAD(0x0020, PIN_INPUT, 0)  /* (T5) MCU_OSPI0_D5 */
+			AM65X_WKUP_IOPAD(0x0024, PIN_INPUT, 0)  /* (R2) MCU_OSPI0_D6 */
+			AM65X_WKUP_IOPAD(0x0028, PIN_INPUT, 0)  /* (R3) MCU_OSPI0_D7 */
+			AM65X_WKUP_IOPAD(0x002c, PIN_OUTPUT, 0) /* (R4) MCU_OSPI0_CSn0 */
+		>;
+	};
 };
 
 &main_pmx0 {
@@ -339,3 +355,23 @@ &mailbox0_cluster10 {
 &mailbox0_cluster11 {
 	status = "disabled";
 };
+
+&ospi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_fss0_ospi0_pins_default>;
+
+	flash@0{
+		compatible = "jedec,spi-nor";
+		reg = <0x0>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <8>;
+		spi-max-frequency = <40000000>;
+		cdns,tshsl-ns = <60>;
+		cdns,tsd2d-ns = <60>;
+		cdns,tchsh-ns = <60>;
+		cdns,tslch-ns = <60>;
+		cdns,read-delay = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+	};
+};
