arm64: dts: ls1088a: Add QSPI support for NXP LS1088

Add QSPI node in dtsi(ls1088a), and dts(ls1088ardb, ls1088aqds) boards.

Both ls1088ardb and ls1088aqds has two 64MB flash from SPANSION(s25fs512s).
QUAD I/O is tested in case of read and single I/O is tested in case of
write.
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/fsl-ls1088a-qds.dts

@@ -143,6 +143,30 @@ &esdhc {
 	status = "okay";
 };
 
+&qspi {
+	status = "okay";
+
+	s25fs512s0: flash@0 {
+		compatible = "jedec,spi-nor";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <50000000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <1>;
+		reg = <0>;
+	};
+
+	s25fs512s1: flash@1 {
+		compatible = "jedec,spi-nor";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <50000000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <1>;
+		reg = <1>;
+	};
+};
+
 &sata {
 	status = "okay";
 };

arch/arm64/boot/dts/freescale/fsl-ls1088a-rdb.dts

@@ -86,6 +86,30 @@ &esdhc {
 	status = "okay";
 };
 
+&qspi {
+	status = "okay";
+
+	s25fs512s0: flash@0 {
+		compatible = "jedec,spi-nor";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <50000000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <1>;
+		reg = <0>;
+	};
+
+	s25fs512s1: flash@1 {
+		compatible = "jedec,spi-nor";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <50000000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <1>;
+		reg = <1>;
+	};
+};
+
 &sata {
 	status = "okay";
 };

arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi

@@ -375,6 +375,19 @@ i2c3: i2c@2030000 {
 			status = "disabled";
 		};
 
+		qspi: spi@20c0000 {
+			compatible = "fsl,ls2080a-qspi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x0 0x20c0000 0x0 0x10000>,
+			      <0x0 0x20000000 0x0 0x10000000>;
+			reg-names = "QuadSPI", "QuadSPI-memory";
+			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+			clock-names = "qspi_en", "qspi";
+			clocks = <&clockgen 4 3>, <&clockgen 4 3>;
+			status = "disabled";
+		};
+
 		esdhc: esdhc@2140000 {
 			compatible = "fsl,ls1088a-esdhc", "fsl,esdhc";
 			reg = <0x0 0x2140000 0x0 0x10000>;