Commit d70a560f authored by Igor Grinberg's avatar Igor Grinberg Committed by Remy Bohmer

README: add documentation for CONFIG_USB_ULPI*

Add documentation for CONFIG_USB_ULPI and CONFIG_USB_ULPI_VIEWPORT
configuration options.
Signed-off-by: default avatarIgor Grinberg <grinberg@compulab.co.il>
parent cf9f95f2
......@@ -1185,6 +1185,14 @@ The following options need to be configured:
for your device
- CONFIG_USBD_PRODUCTID 0xFFFF
- ULPI Layer Support:
The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via
the generic ULPI layer. The generic layer accesses the ULPI PHY
via the platform viewport, so you need both the genric layer and
the viewport enabled. Currently only Chipidea/ARC based
viewport is supported.
To enable the ULPI layer support, define CONFIG_USB_ULPI and
CONFIG_USB_ULPI_VIEWPORT in your board configuration file.
- MMC Support:
The MMC controller on the Intel PXA is supported. To
......
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