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authorVipin KUMAR <vipin.kumar@st.com>2012-03-26 15:38:06 +0530
committerMarek Vasut <marek.vasut@gmail.com>2012-03-28 16:31:08 +0200
commitf9da0f894328802cb8aaeb8a24660e37ff624d26 (patch)
tree5906cbda2eee776bc3200bf0e2c20e2378ddc42a /README
parent7cb30b13f12077c7eec8ce2419cd96cd65ace8e2 (diff)
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Enable high speed support for USB device framework and usbtty
This patch adds the support for high speed in usb device framework and usbtty driver. This feature has been kept within a macro CONFIG_USBD_HS, so the board configuration files have to define this macro to enable high speed support. Along with that specific peripheral drivers also need to define a function to let the framework know that the enumeration has happened at high speed. This function prototype is "int is_usbd_high_speed(void)" Signed-off-by: Vipin Kumar <vipin.kumar@st.com> Signed-off-by: Amit Virdi <amit.virdi@st.com>
Diffstat (limited to 'README')
-rw-r--r--README8
1 files changed, 8 insertions, 0 deletions
diff --git a/README b/README
index b69a3b6..0ab6892 100644
--- a/README
+++ b/README
@@ -1148,6 +1148,14 @@ The following options need to be configured:
Define this to have a tty type of device available to
talk to the UDC device
+ CONFIG_USBD_HS
+ Define this to enable the high speed support for usb
+ device and usbtty. If this feature is enabled, a routine
+ int is_usbd_high_speed(void)
+ also needs to be defined by the driver to dynamically poll
+ whether the enumeration has succeded at high speed or full
+ speed.
+
CONFIG_SYS_CONSOLE_IS_IN_ENV
Define this if you want stdin, stdout &/or stderr to
be set to usbtty.