ARM: dts: keystone-k2g-evm: Add QSPI DT node.

66AK2G EVM has a s25fl512s flash connected to QSPI. Add DT nodes for the
same.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>

arch/arm/boot/dts/keystone-k2g-evm.dts

@@ -103,6 +103,18 @@ K2G_CORE_IOPAD(0x11b0) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0)	/* spi1_miso.
 			K2G_CORE_IOPAD(0x11b4) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0)	/* spi1_mosi.spi1_mosi */
 		>;
 	};
+
+	qspi_pins: pinmux_qspi_pins {
+		pinctrl-single,pins = <
+			K2G_CORE_IOPAD(0x1204) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0) /* qspi_clk.qspi_clk */
+			K2G_CORE_IOPAD(0x1208) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0) /* qspi_rclk.qspi_rclk */
+			K2G_CORE_IOPAD(0x120c) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0) /* qspi_d0.qspi_d0 */
+			K2G_CORE_IOPAD(0x1210) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0) /* qspi_d1.qspi_d1 */
+			K2G_CORE_IOPAD(0x1214) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0) /* qspi_d2.qspi_d2 */
+			K2G_CORE_IOPAD(0x1218) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0) /* qspi_d3.qspi_d3 */
+			K2G_CORE_IOPAD(0x121c) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0) /* qspi_csn0.qspi_csn0 */
+		>;
+	};
 };
 
 &uart0 {
@@ -204,3 +216,50 @@ partition@1 {
 		};
 	};
 };
+
+&qspi {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&qspi_pins>;
+	cdns,rclk-en;
+
+	flash0: m25p80@0 {
+		compatible = "s25fl512s", "jedec,spi-nor";
+		reg = <0>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <4>;
+		spi-max-frequency = <96000000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		cdns,read-delay = <5>;
+		cdns,tshsl-ns = <500>;
+		cdns,tsd2d-ns = <500>;
+		cdns,tchsh-ns = <119>;
+		cdns,tslch-ns = <119>;
+
+		partition@0 {
+			label = "QSPI.u-boot-spl-os";
+			reg = <0x00000000 0x00100000>;
+		};
+		partition@1 {
+			label = "QSPI.u-boot-env";
+			reg = <0x00100000 0x00040000>;
+		};
+		partition@2 {
+			label = "QSPI.skern";
+			reg = <0x00140000 0x0040000>;
+		};
+		partition@3 {
+			label = "QSPI.pmmc-firmware";
+			reg = <0x00180000 0x0040000>;
+		};
+		partition@4 {
+			label = "QSPI.kernel";
+			reg = <0x001C0000 0x0800000>;
+		};
+		partition@5 {
+			label = "QSPI.file-system";
+			reg = <0x009C0000 0x3640000>;
+		};
+	};
+};