slot or emmc on mmc1 - mmc3. Setting this to 1, 2 or 3 will enable
support for this.
+config USB1_VBUS_PIN
+ string "Vbus enable pin for usb1 (ehci0)"
+ default "PH6" if MACH_SUN4I || MACH_SUN7I
+ ---help---
+ Set the Vbus enable pin for usb1 (ehci0, usb0 is the otg). This takes
+ a string in the format understood by sunxi_name_to_gpio, e.g.
+ PH1 for pin 1 of port H.
+
+config USB2_VBUS_PIN
+ string "Vbus enable pin for usb2 (ehci1)"
+ default "PH3" if MACH_SUN4I || MACH_SUN7I
+ ---help---
+ See USB1_VBUS_PIN help text.
+
endif