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