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