arm64: dts: ti: k3-am654: Enable main domain McSPI0

Enable McSPI0 of main domain and add DT node for the SPI NOR flash
connected to CS0.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>

arch/arm64/boot/dts/ti/k3-am654-base-board.dts

@@ -60,6 +60,15 @@ AM65X_IOPAD(0x0074, PIN_INPUT, 5) /* (T27) GPMC0_CSn3.I2C2_SCL */
 			AM65X_IOPAD(0x0070, PIN_INPUT, 5) /* (R25) GPMC0_CSn2.I2C2_SDA */
 		>;
 	};
+
+	main_spi0_pins_default: main-spi0-pins-default {
+		pinctrl-single,pins = <
+			AM65X_IOPAD(0x01c4, PIN_INPUT, 0) /* (AH13) SPI0_CLK */
+			AM65X_IOPAD(0x01c8, PIN_INPUT, 0) /* (AE13) SPI0_D0 */
+			AM65X_IOPAD(0x01cc, PIN_INPUT, 0) /* (AD13) SPI0_D1 */
+			AM65X_IOPAD(0x01bc, PIN_OUTPUT, 0) /* (AG13) SPI0_CS0 */
+		>;
+	};
 };
 
 &main_pmx1 {
@@ -136,3 +145,21 @@ &ecap0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&ecap0_pins_default>;
 };
+
+&main_spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_spi0_pins_default>;
+	#address-cells = <1>;
+	#size-cells= <0>;
+	ti,pindir-d0-out-d1-in = <1>;
+
+	flash@0{
+		compatible = "jedec,spi-nor";
+		reg = <0x0>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+		spi-max-frequency = <48000000>;
+		#address-cells = <1>;
+		#size-cells= <1>;
+	};
+};