| 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. |
