ARM: tegra: Harmony: enable ULPI USB port

The ULPI port is routed onto pins on the mini PCI Express connector. A
standard breakout board may be used to access the port.

* Add required DT entries to configure the ULPI port.
* Setup up the ULPI pinmux in the board code.
* Enable multiple USB controller and ULPI support in the board config.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

board/nvidia/dts/tegra20-harmony.dts

@@ -8,6 +8,7 @@
 
 	aliases {
 		usb0 = "/usb@c5008000";
+		usb1 = "/usb@c5004000";
 	};
 
 	memory {
@@ -52,7 +53,7 @@
 	};
 
 	usb@c5004000 {
-		status = "disabled";
+		nvidia,phy-reset-gpio = <&gpio 169 0>; /* gpio PV1 */
 	};
 
 	nand-controller@70008000 {

board/nvidia/harmony/harmony.c

@@ -75,3 +75,12 @@ int board_mmc_init(bd_t *bd)
 	return 0;
 }
 #endif
+
+void pin_mux_usb(void)
+{
+	funcmux_select(PERIPH_ID_USB2, FUNCMUX_USB2_ULPI);
+	pinmux_set_func(PINGRP_CDEV2, PMUX_FUNC_PLLP_OUT4);
+	pinmux_tristate_disable(PINGRP_CDEV2);
+	/* USB2 PHY reset GPIO */
+	pinmux_tristate_disable(PINGRP_UAC);
+}

include/configs/harmony.h

@@ -72,8 +72,11 @@
 #define CONFIG_ENV_OFFSET	(SZ_512M - SZ_128K) /* 128K sector size */
 
 /* USB Host support */
+#define CONFIG_USB_MAX_CONTROLLER_COUNT 3
 #define CONFIG_USB_EHCI
 #define CONFIG_USB_EHCI_TEGRA
+#define CONFIG_USB_ULPI
+#define CONFIG_USB_ULPI_VIEWPORT
 #define CONFIG_USB_STORAGE
 #define CONFIG_CMD_USB