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- Reference code ""drivers/usb/ulpi/omap-ulpi-viewport.c"
- Contains the ulpi read write api's to perform
- any ulpi phy port access on omap platform.
- On omap ehci reg map contains INSNREG05_ULPI
- register which offers the ulpi phy access so
- any ulpi phy commands should be passsed using this
- register.
- omap-ulpi-viewport.c is a low level function
- implementation of "drivers/usb/ulpi/ulpi.c"
- To enable and use omap-ulpi-viewport.c
- we require CONFIG_USB_ULPI_VIEWPORT_OMAP and
- CONFIG_USB_ULPI be enabled in config file.
- Any ulpi ops request can be done with ulpi.c
- and soc specific binding and usage is done with
- omap-ulpi-viewport implementation.
- Ex: scenario:
- omap-ehci driver code requests for ulpi phy reset if
- ehci is used in phy mode, which will call ulpi phy reset
- the ulpi phy reset does ulpi_read/write from viewport
- implementation which will do ulpi reset using the
- INSNREG05_ULPI register.
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