arm64: dts: ti: k3-j784s4-evm: Add support for OSPI and QSPI flashes

J784S4 has S28HS512T OSPI flash connected to OSPI0 and MT25QU512A QSPI
flash connected to OSPI1, enable support for the same. Also describe
the partition information according to the offsets in the bootloader.
Co-developed-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Apurva Nandan <a-nandan@ti.com>
Link: https://lore.kernel.org/r/20230504080305.38986-3-a-nandan@ti.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-j784s4-evm.dts

@@ -337,12 +337,170 @@ J784S4_WKUP_IOPAD(0x170, PIN_INPUT, 0) /* (Y36) MCU_ADC1_AIN7 */
 	};
 };
 
+&wkup_pmx0 {
+	mcu_fss0_ospi0_pins_default: mcu-fss0-ospi0-pins-default {
+		pinctrl-single,pins = <
+			J784S4_WKUP_IOPAD(0x000, PIN_OUTPUT, 0) /* (E32) MCU_OSPI0_CLK */
+			J784S4_WKUP_IOPAD(0x02c, PIN_OUTPUT, 0) /* (A32) MCU_OSPI0_CSn0 */
+			J784S4_WKUP_IOPAD(0x00c, PIN_INPUT, 0) /* (B33) MCU_OSPI0_D0 */
+			J784S4_WKUP_IOPAD(0x010, PIN_INPUT, 0) /* (B32) MCU_OSPI0_D1 */
+			J784S4_WKUP_IOPAD(0x014, PIN_INPUT, 0) /* (C33) MCU_OSPI0_D2 */
+			J784S4_WKUP_IOPAD(0x018, PIN_INPUT, 0) /* (C35) MCU_OSPI0_D3 */
+			J784S4_WKUP_IOPAD(0x01c, PIN_INPUT, 0) /* (D33) MCU_OSPI0_D4 */
+			J784S4_WKUP_IOPAD(0x020, PIN_INPUT, 0) /* (D34) MCU_OSPI0_D5 */
+			J784S4_WKUP_IOPAD(0x024, PIN_INPUT, 0) /* (E34) MCU_OSPI0_D6 */
+			J784S4_WKUP_IOPAD(0x028, PIN_INPUT, 0) /* (E33) MCU_OSPI0_D7 */
+			J784S4_WKUP_IOPAD(0x008, PIN_INPUT, 0) /* (C34) MCU_OSPI0_DQS */
+			J784S4_WKUP_IOPAD(0x03c, PIN_OUTPUT, 6) /* (C32) MCU_OSPI0_CSn3.MCU_OSPI0_ECC_FAIL */
+			J784S4_WKUP_IOPAD(0x038, PIN_OUTPUT, 6) /* (B34) MCU_OSPI0_CSn2.MCU_OSPI0_RESET_OUT0 */
+		>;
+	};
+
+	mcu_fss0_ospi1_pins_default: mcu-fss0-ospi1-pins-default {
+		pinctrl-single,pins = <
+			J784S4_WKUP_IOPAD(0x040, PIN_OUTPUT, 0) /* (F32) MCU_OSPI1_CLK */
+			J784S4_WKUP_IOPAD(0x05c, PIN_OUTPUT, 0) /* (G32) MCU_OSPI1_CSn0 */
+			J784S4_WKUP_IOPAD(0x04c, PIN_INPUT, 0) /* (E35) MCU_OSPI1_D0 */
+			J784S4_WKUP_IOPAD(0x050, PIN_INPUT, 0) /* (D31) MCU_OSPI1_D1 */
+			J784S4_WKUP_IOPAD(0x054, PIN_INPUT, 0) /* (G31) MCU_OSPI1_D2 */
+			J784S4_WKUP_IOPAD(0x058, PIN_INPUT, 0) /* (F33) MCU_OSPI1_D3 */
+			J784S4_WKUP_IOPAD(0x048, PIN_INPUT, 0) /* (F31) MCU_OSPI1_DQS */
+			J784S4_WKUP_IOPAD(0x044, PIN_INPUT, 0) /* (C31) MCU_OSPI1_LBCLKO */
+		>;
+	};
+};
+
 &main_uart8 {
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_uart8_pins_default>;
 };
 
+&fss {
+	status = "okay";
+};
+
+&ospi0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_fss0_ospi0_pins_default>;
+
+	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>;
+			};
+		};
+	};
+};
+
+&ospi1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_fss0_ospi1_pins_default>;
+
+	flash@0{
+		compatible = "jedec,spi-nor";
+		reg = <0x0>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <4>;
+		spi-max-frequency = <40000000>;
+		cdns,tshsl-ns = <60>;
+		cdns,tsd2d-ns = <60>;
+		cdns,tchsh-ns = <60>;
+		cdns,tslch-ns = <60>;
+		cdns,read-delay = <2>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "qspi.tiboot3";
+				reg = <0x0 0x80000>;
+			};
+
+			partition@80000 {
+				label = "qspi.tispl";
+				reg = <0x80000 0x200000>;
+			};
+
+			partition@280000 {
+				label = "qspi.u-boot";
+				reg = <0x280000 0x400000>;
+			};
+
+			partition@680000 {
+				label = "qspi.env";
+				reg = <0x680000 0x40000>;
+			};
+
+			partition@6c0000 {
+				label = "qspi.env.backup";
+				reg = <0x6c0000 0x40000>;
+			};
+
+			partition@800000 {
+				label = "qspi.rootfs";
+				reg = <0x800000 0x37c0000>;
+			};
+
+			partition@3fc0000 {
+				label = "qspi.phypattern";
+				reg = <0x3fc0000 0x40000>;
+			};
+		};
+
+	};
+};
+
 &main_i2c0 {
 	status = "okay";
 	pinctrl-names = "default";