board: pic32mzda: enable USB-host, USB-storage support.

Enable MUSB host and USB storage support for Microchip
PIC32MZ[DA] Starter Kit.

Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>

arch/mips/dts/pic32mzda.dtsi

@@ -171,4 +171,16 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 	};
+
+	usb: musb@1f8e3000 {
+		compatible = "microchip,pic32mzda-usb";
+		reg = <0x1f8e3000 0x1000>,
+		      <0x1f884000 0x1000>;
+		reg-names = "mc", "control";
+		interrupts = <132 IRQ_TYPE_EDGE_RISING>,
+			     <133 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&clock PB5CLK>;
+		clock-names = "usb_clk";
+		status = "disabled";
+	};
 };

arch/mips/dts/pic32mzda_sk.dts

@@ -52,4 +52,8 @@
 	ethernet_phy: lan8740_phy@0 {
 		reg = <0>;
 	};
+};
+
+&usb {
+	status = "okay";
 };

configs/pic32mzdask_defconfig

@@ -14,6 +14,7 @@ CONFIG_LOOPW=y
 CONFIG_CMD_MEMTEST=y
 CONFIG_CMD_MEMINFO=y
 # CONFIG_CMD_FLASH is not set
+CONFIG_CMD_USB=y
 # CONFIG_CMD_FPGA is not set
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_RARP=y
@@ -30,5 +31,10 @@ CONFIG_PIC32_ETH=y
 CONFIG_PINCTRL=y
 # CONFIG_PINCTRL_FULL is not set
 CONFIG_USE_PRIVATE_LIBGCC=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_MUSB_HOST=y
+CONFIG_USB_MUSB_PIC32=y
+CONFIG_USB_STORAGE=y
 CONFIG_USE_TINY_PRINTF=y
 CONFIG_CMD_DHRYSTONE=y

include/configs/pic32mzdask.h

@@ -105,6 +105,12 @@
 #define CONFIG_GENERIC_MMC
 #define CONFIG_CMD_MMC
 
+/*--------------------------------------------------
+ * USB Configuration
+ */
+#define CONFIG_USB_MUSB_PIO_ONLY
+#define CONFIG_SYS_CACHELINE_SIZE	16
+
 /*-----------------------------------------------------------------------
  * File System Configuration
  */
@@ -153,6 +159,7 @@
 
 #define BOOT_TARGET_DEVICES(func)	\
 	func(MMC, mmc, 0)		\
+	func(USB, usb, 0)		\
 	func(DHCP, dhcp, na)
 
 #include <config_distro_bootcmd.h>