ARM: dts: am335x-sl50: Enable SPI0 interface and Flash Memory.

Add support for the 32Mb Serial Flash Memory connected to SPI0
and using CS1.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am335x-sl50.dts

@@ -262,6 +262,16 @@ AM33XX_IOPAD(0x84c, PIN_OUTPUT | MUX_MODE6)	/* gpmc_a3.ehrpwm1b */
 		>;
 	};
 
+	spi0_pins: pinmux_spi0_pins {
+		pinctrl-single,pins = <
+			AM33XX_IOPAD(0x954, PIN_INPUT_PULLUP | MUX_MODE0)	/* SPI0_MOSI - spi0_d0.spi0_d0 */
+			AM33XX_IOPAD(0x958, PIN_INPUT_PULLUP | MUX_MODE0)	/* SPI0_MISO - spi0_d1.spi0_d1 */
+			AM33XX_IOPAD(0x950, PIN_INPUT_PULLUP | MUX_MODE0)	/* SPI0_CLK  - spi0_clk.spi0_clk */
+			AM33XX_IOPAD(0x95c, PIN_INPUT_PULLUP | MUX_MODE0)	/* SPI0_CS0 (NBATTSS) - spi0_cs0.spi0_cs0 */
+			AM33XX_IOPAD(0x960, PIN_INPUT_PULLUP | MUX_MODE0)	/* SPI0_CS1 (FPGA_FLASH_NCS) - spi0_cs1.spi0_cs1 */
+		>;
+	};
+
 	lwb_pins: pinmux_lwb_pins {
 		pinctrl-single,pins = <
 			AM33XX_IOPAD(0x9a4, PIN_OUTPUT | MUX_MODE7)	/* SoundPA_en - mcasp0_fsr.gpio3_19 */
@@ -400,6 +410,20 @@ &uart4 {
 	pinctrl-0 = <&uart4_pins>;
 };
 
+&spi0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	flash: n25q032@1 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "micron,n25q032";
+		reg = <1>;
+		spi-max-frequency = <5000000>;
+	};
+};
+
 #include "tps65217.dtsi"
 
 &tps {