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authorLucas Stach <dev@lynxeye.de>2012-10-01 00:44:35 +0200
committerTom Rini <trini@ti.com>2012-10-15 11:54:01 -0700
commit6d365ea0acf0b6d8e4efd28d9853d287c52d7fec (patch)
tree856a73236a703f2bbeb92a276b0a66dbc71d5c49 /README
parent141288b3a3249b79a168988c7d9e9ce817013d6f (diff)
tegra20: add USB ULPI init code
This adds the required code to set up a ULPI USB port. It is mostly a port of the Linux ULPI setup code with some tweaks added for more correctness, discovered along the way of debugging this. To use this both CONFIG_USB_ULPI and CONFIG_USB_ULPI_VIEWPORT have to be set in the board configuration file. Signed-off-by: Lucas Stach <dev@lynxeye.de> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Diffstat (limited to 'README')
-rw-r--r--README3
1 files changed, 3 insertions, 0 deletions
diff --git a/README b/README
index dd250a0fa..9804cea91 100644
--- a/README
+++ b/README
@@ -1268,6 +1268,9 @@ The following options need to be configured:
viewport is supported.
To enable the ULPI layer support, define CONFIG_USB_ULPI and
CONFIG_USB_ULPI_VIEWPORT in your board configuration file.
+ If your ULPI phy needs a different reference clock than the
+ standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to
+ the appropriate value in Hz.
- MMC Support:
The MMC controller on the Intel PXA is supported. To