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authorIgor Grinberg <grinberg@compulab.co.il>2011-12-12 12:08:35 +0200
committerRemy Bohmer <linux@bohmer.net>2011-12-16 21:37:16 +0100
commitd70a560fd77b8a357257c7baa0a24b326c097bc3 (patch)
treef0a0457bbda7b9a07c7b2e343af817b171ae5c92 /README
parentcf9f95f29390c2cdce80bab86d24b002c8d08f58 (diff)
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README: add documentation for CONFIG_USB_ULPI*
Add documentation for CONFIG_USB_ULPI and CONFIG_USB_ULPI_VIEWPORT configuration options. Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
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@@ -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