diff --git a/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi b/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi
index 262413d533..9f7e7374df 100644
--- a/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi
+++ b/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi
@@ -21,6 +21,7 @@
 		i2c3 = &main_i2c0;
 		ethernet0 = &cpsw_port1;
 		mmc1 = &main_sdhci1;
+		spi0 = &ospi0;
 	};
 };
 
@@ -156,6 +157,30 @@
 	};
 };
 
+&fss {
+	bootph-pre-ram;
+};
+
+&mcu_fss0_ospi0_pins_default {
+	bootph-pre-ram;
+};
+
+&ospi0 {
+	bootph-pre-ram;
+
+	ospi0_nor: flash@0 {
+		bootph-pre-ram;
+
+		partition@3fc0000 {
+			bootph-pre-ram;
+		};
+	};
+};
+
+&ospi0_nor {
+	bootph-pre-ram;
+};
+
 &serdes_ln_ctrl {
 	u-boot,mux-autoprobe;
 };
diff --git a/arch/arm/dts/k3-am68-sk-r5-base-board.dts b/arch/arm/dts/k3-am68-sk-r5-base-board.dts
index a64baba149..32c30e14ff 100644
--- a/arch/arm/dts/k3-am68-sk-r5-base-board.dts
+++ b/arch/arm/dts/k3-am68-sk-r5-base-board.dts
@@ -191,4 +191,9 @@
 	ti,sci = <&dm_tifs>;
 };
 
+&ospi0 {
+	reg = <0x0 0x47040000 0x0 0x100>,
+	      <0x0 0x50000000 0x0 0x8000000>;
+};
+
 #include "k3-am68-sk-base-board-u-boot.dtsi"
diff --git a/arch/arm/dts/k3-am68-sk-som.dtsi b/arch/arm/dts/k3-am68-sk-som.dtsi
index cb1c58fcd1..023f07c480 100644
--- a/arch/arm/dts/k3-am68-sk-som.dtsi
+++ b/arch/arm/dts/k3-am68-sk-som.dtsi
@@ -30,6 +30,85 @@
 	};
 };
 
+&wkup_pmx0 {
+	mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-pins-default {
+		pinctrl-single,pins = <
+			J721S2_WKUP_IOPAD(0x000, PIN_OUTPUT, 0) /* (D19) MCU_OSPI0_CLK */
+			J721S2_WKUP_IOPAD(0x02c, PIN_OUTPUT, 0) /* (F15) MCU_OSPI0_CSn0 */
+			J721S2_WKUP_IOPAD(0x03c, PIN_OUTPUT, 0) /* (F17) MCU_OSPI0_CSn3 */
+			J721S2_WKUP_IOPAD(0x00c, PIN_INPUT, 0) /* (C19) MCU_OSPI0_D0 */
+			J721S2_WKUP_IOPAD(0x010, PIN_INPUT, 0) /* (F16) MCU_OSPI0_D1 */
+			J721S2_WKUP_IOPAD(0x014, PIN_INPUT, 0) /* (G15) MCU_OSPI0_D2 */
+			J721S2_WKUP_IOPAD(0x018, PIN_INPUT, 0) /* (F18) MCU_OSPI0_D3 */
+			J721S2_WKUP_IOPAD(0x01c, PIN_INPUT, 0) /* (E19) MCU_OSPI0_D4 */
+			J721S2_WKUP_IOPAD(0x020, PIN_INPUT, 0) /* (G19) MCU_OSPI0_D5 */
+			J721S2_WKUP_IOPAD(0x024, PIN_INPUT, 0) /* (F19) MCU_OSPI0_D6 */
+			J721S2_WKUP_IOPAD(0x028, PIN_INPUT, 0) /* (F20) MCU_OSPI0_D7 */
+			J721S2_WKUP_IOPAD(0x008, PIN_INPUT, 0) /* (E18) MCU_OSPI0_DQS */
+			J721S2_WKUP_IOPAD(0x004, PIN_INPUT, 0) /* (E20) MCU_OSPI0_LBCLKO */
+		>;
+	};
+};
+
+&ospi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_fss0_ospi0_pins_default>;
+
+	ospi0_nor: flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0x0>;
+		spi-tx-bus-width = <8>;
+		spi-rx-bus-width = <8>;
+		spi-max-frequency = <25000000>;
+		cdns,tshsl-ns = <60>;
+		cdns,tsd2d-ns = <60>;
+		cdns,tchsh-ns = <60>;
+		cdns,tslch-ns = <60>;
+		cdns,read-delay = <4>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "ospi.tiboot3";
+				reg = <0x0 0x80000>;
+			};
+
+			partition@80000 {
+				label = "ospi.tispl";
+				reg = <0x80000 0x200000>;
+			};
+
+			partition@280000 {
+				label = "ospi.u-boot";
+				reg = <0x280000 0x400000>;
+			};
+
+			partition@680000 {
+				label = "ospi.env";
+				reg = <0x680000 0x40000>;
+			};
+
+			partition@6c0000 {
+				label = "ospi.env.backup";
+				reg = <0x6c0000 0x40000>;
+			};
+
+			partition@800000 {
+				label = "ospi.rootfs";
+				reg = <0x800000 0x37c0000>;
+			};
+
+			partition@3fc0000 {
+				label = "ospi.phypattern";
+				reg = <0x3fc0000 0x40000>;
+			};
+		};
+	};
+};
+
 &mailbox0_cluster0 {
 	status = "disabled";
 };