1Reference code ""drivers/usb/ulpi/omap-ulpi-viewport.c" 2 3Contains the ulpi read write api's to perform 4any ulpi phy port access on omap platform. 5 6On omap ehci reg map contains INSNREG05_ULPI 7register which offers the ulpi phy access so 8any ulpi phy commands should be passsed using this 9register. 10 11omap-ulpi-viewport.c is a low level function 12implementation of "drivers/usb/ulpi/ulpi.c" 13 14To enable and use omap-ulpi-viewport.c 15we require CONFIG_USB_ULPI_VIEWPORT_OMAP and 16CONFIG_USB_ULPI be enabled in config file. 17 18Any ulpi ops request can be done with ulpi.c 19and soc specific binding and usage is done with 20omap-ulpi-viewport implementation. 21 22Ex: scenario: 23omap-ehci driver code requests for ulpi phy reset if 24ehci is used in phy mode, which will call ulpi phy reset 25the ulpi phy reset does ulpi_read/write from viewport 26implementation which will do ulpi reset using the 27INSNREG05_ULPI register. 28